| ||||
|---|---|---|---|---|
| Cardinal | seventy-three | |||
| Ordinal | 73rd (seventy-third) | |||
| Factorization | prime | |||
| Prime | 21st | |||
| Divisors | 1, 73 | |||
| Greek numeral | ΟΓ´ | |||
| Roman numeral | LXXIII | |||
| Binary | 10010012 | |||
| Ternary | 22013 | |||
| Senary | 2016 | |||
| Octal | 1118 | |||
| Duodecimal | 6112 | |||
| Hexadecimal | 4916 | |||
73 (seventy-three) is the natural number following 72 and preceding 74. In English, it is the smallest natural number with twelve letters in its spelled out name.