| ||||
|---|---|---|---|---|
| Cardinal | eight hundred forty | |||
| Ordinal | 840th (eight hundred fortieth) | |||
| Factorization | 23 × 3 × 5 × 7 | |||
| Divisors | 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840 | |||
| Greek numeral | ΩΜ´ | |||
| Roman numeral | DCCCXL | |||
| Binary | 11010010002 | |||
| Ternary | 10110103 | |||
| Senary | 35206 | |||
| Octal | 15108 | |||
| Duodecimal | 5A012 | |||
| Hexadecimal | 34816 | |||
840 (eight hundred [and] forty) is the natural number following 839 and preceding 841.