12 (number)
natural number
Twelve is a number. It comes between eleven and thirteen, and it is an even number. It is divisible by 1, 2, 3, 4, 6, and 12. Its ordinal is 12th (twelfth). In Roman numerals, it is written as XII. It is the base of duodecimal numbers.
| ||||
|---|---|---|---|---|
| Cardinal | twelve | |||
| Ordinal | 12th (twelfth) | |||
| Factorization | 22× 3 | |||
| Greek numeral | ΙΒ´ | |||
| Roman numeral | XII | |||
| Greek prefix | dodeca-/dodeka- | |||
| Latin prefix | duodeca- | |||
| Binary | 11002 | |||
| Ternary | 1103 | |||
| Quaternary | 304 | |||
| Quinary | 225 | |||
| Senary | 206 | |||
| Octal | 148 | |||
| Duodecimal | 1012 | |||
| Hexadecimal | C16 | |||
| Vigesimal | C20 | |||
| Base 36 | C36 | |||
| The Simple English Wiktionary has a definition for: twelve. |
MathematicsEdit
- Twelve is the first abundant number.[1]
