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Cardinal | eighteen | |||
Ordinal | 18th (eighteenth) | |||
Numeral system | octodecimal | |||
Factorization | 2 × 32 | |||
Divisors | 1, 2, 3, 6, 9, 18 | |||
Greek numeral | ΙΗ´ | |||
Roman numeral | XVIII | |||
Binary | 100102 | |||
Ternary | 2003 | |||
Senary | 306 | |||
Octal | 228 | |||
Duodecimal | 1612 | |||
Hexadecimal | 1216 | |||
Hebrew numeral | י"ח | |||
Babylonian numeral | 𒌋𒐜 |
18 (eighteen) is the natural number following 17 and preceding 19. It is an even composite number.
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