235 (number): Difference between revisions
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{{Infobox number |
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'''235''' is the integer after 234 and before 236. |
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| number = 235 |
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'''235''' ('''two hundred [and] thirty-five''') is the integer following [[234 (number)|234]] and preceding [[236 (number)|236]]. |
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Additionally, 235 is: |
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{| border="1" style="float: right; border-collapse: collapse;" |
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|----- |
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| colspan="2" | {{Numbers_0-1000}} |
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|----- |
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| 235 |
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|----- |
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| [[Ordinal number|Ordinal]] |
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<td>Two hundred [and]<br /> thirty-five |
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|----- |
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| [[Cardinal number|Cardinal]] || 235th |
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|----- |
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| [[Factorization]] |
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<td><math>5 \cdot 47</math> |
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|----- |
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| [[Roman numeral]] || CCXXXV |
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|----- |
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| [[Binary numeral system|Binary]] || 11101011 |
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|----- |
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| [[Hexadecimal]] || EB |
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*a [[semiprime]] |
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==In mathematics== |
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*a [[heptagonal number]]<ref>{{Cite OEIS|A000566|name=Heptagonal numbers}}</ref> |
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*a [[centered triangular number]]<ref>{{Cite OEIS|A005448|name=Centered triangular numbers}}</ref> |
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*therefore a [[figurate number]] in two ways |
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*palindromic in bases 4 (3223<sub>4</sub>), 7 (454<sub>7</sub>), 8 (353<sub>8</sub>), 13 (151<sub>13</sub>), and 46 (55<sub>46</sub>) |
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*a [[Harshad number]] in bases 6, 47, 48, 95, 116, 189 and 231 |
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*a [[Smarandache–Wellin number]] |
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Also: |
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It is the second number of the tenth row of a skewed Fibonacci-Pascal triangle {{OEIS|id=A037027}}. |
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*There are 235 different [[Tree (graph theory)|trees]] with 11 unlabeled nodes.<ref>{{Cite OEIS|A000055|name=Number of trees with n unlabeled nodes}}</ref> |
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*If an [[equilateral triangle]] is subdivided into smaller equilateral triangles whose side length is 1/9 as small, the resulting "matchstick arrangement" will have exactly 235 different equilateral triangles of varying sizes in it.<ref>{{Cite OEIS|A002717}}</ref> |
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==References== |
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235 is the concatenation of the base 10 representations of the first three primes, and thus it is a [[Smarandache–Wellin number]]. |
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{{reflist}} |
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{{Integers|2}} |
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235 is from the subset of numbers that have exactly two nontrivial [[prime factor]]s, neither of which is two or three, namely 235 = 5 X 47. Thus, 235 is also a square-free number. |
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==In other fields== |
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235 is also: |
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*The [[atomic mass number]] of an important [[isotope]] of the element [[uranium]], [[uranium-235|U-235]], the [[fissile isotope]] which is used as the fuel for [[nuclear reactor]]s and in some [[nuclear weapon]]s. The atomic mass number results from each [[atomic nucleus|nucleus]] of U-245 containing 92 protons and 143 neutrons, and 92 + 143 = 235. |
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*The number of three [[Interstate Highway System|interstate highways]] in the [[United States]], located in the states of [[Iowa]], [[Kansas]], and [[Oklahoma]]. See: [[Interstate 235 (disambiguation)|Interstate 235]]. |
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*The year [[235]] A.D., a year in which a new [[emperor]] of the [[Roman Empire]] was crowned. |
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[[Category:Integers]] |
[[Category:Integers]] |
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[[fr:235 (nombre)]] |
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[[ko:235]] |
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[[it:235 (numero)]] |
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[[ht:235 (nonm)]] |
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[[hu:235 (szám)]] |
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[[mk:235 (број)]] |
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[[ja:235]] |
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[[ru:235 (число)]] |
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[[zh:235]] |
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Latest revision as of 17:22, 22 April 2024
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|---|---|---|---|---|
| Cardinal | two hundred thirty-five | |||
| Ordinal | 235th (two hundred thirty-fifth) | |||
| Factorization | 5 × 47 | |||
| Greek numeral | ΣΛΕ´ | |||
| Roman numeral | CCXXXV | |||
| Binary | 111010112 | |||
| Ternary | 222013 | |||
| Senary | 10316 | |||
| Octal | 3538 | |||
| Duodecimal | 17712 | |||
| Hexadecimal | EB16 | |||
235 (two hundred [and] thirty-five) is the integer following 234 and preceding 236.
Additionally, 235 is:
- a semiprime
- a heptagonal number[1]
- a centered triangular number[2]
- therefore a figurate number in two ways
- palindromic in bases 4 (32234), 7 (4547), 8 (3538), 13 (15113), and 46 (5546)
- a Harshad number in bases 6, 47, 48, 95, 116, 189 and 231
- a Smarandache–Wellin number
Also:
- There are 235 different trees with 11 unlabeled nodes.[3]
- If an equilateral triangle is subdivided into smaller equilateral triangles whose side length is 1/9 as small, the resulting "matchstick arrangement" will have exactly 235 different equilateral triangles of varying sizes in it.[4]
References
[edit]- ^ Sloane, N. J. A. (ed.). "Sequence A000566 (Heptagonal numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A005448 (Centered triangular numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A000055 (Number of trees with n unlabeled nodes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A002717". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
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