156 (number)
| ||||
|---|---|---|---|---|
| Cardinal | one hundred fifty-six | |||
| Ordinal | 156th (one hundred fifty-sixth) | |||
| Factorization | 22 × 3 × 13 | |||
| Divisors | 1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156 | |||
| Greek numeral | ΡΝϚ´ | |||
| Roman numeral | CLVI, clvi | |||
| Binary | 100111002 | |||
| Ternary | 122103 | |||
| Senary | 4206 | |||
| Octal | 2348 | |||
| Duodecimal | 11012 | |||
| Hexadecimal | 9C16 | |||
156 (one hundred [and] fifty-six) is the natural number, following 155 and preceding 157.
In mathematics
[edit]156 is an abundant number, a pronic number, a dodecagonal number,[1] and a refactorable number.
156 is the number of graphs on 6 unlabeled nodes.[2]
156 is a repdigit in base 5 (1111), and also in bases 25, 38, 51, 77, and 155.
156 degrees is the internal angle of a pentadecagon.
References
[edit]- ^ "Sloane's A051624 : 12-gonal (or dodecagonal) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
- ^ "Sloane's A000088 : Number of graphs with n nodes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2021-12-19.
External links
[edit]
Wikimedia Commons has media related to 156 (number).
- The Number 156 Archived 2020-11-26 at the Wayback Machine
- 156th Street (3rd Avenue El)