18 (nummer)
18 (echteen) is the naitural nummer follaein 17 an precedin 19.
| ||||
|---|---|---|---|---|
| Cardinal | echteen | |||
| Ordinal | 18t (echteent) | |||
| Numeral seestem | octodecimal | |||
| Factorisation | 2 × 32 | |||
| Divisors | 1, 2, 3, 6, 9, 18 | |||
| Greek numeral | ΙΗ´ | |||
| Roman numeral | XVIII | |||
| Binar | 100102 | |||
| Ternary | 2003 | |||
| Quaternary | 1024 | |||
| Quinary | 335 | |||
| Senary | 306 | |||
| Octal | 228 | |||
| Duodecimal | 1612 | |||
| Hexadecimal | 1216 | |||
| Vigesimal | I20 | |||
| Base 36 | I36 | |||