Compare 628 vs 640
| Property | 628 | 640 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 2 |
| Total factors | 3 | 8 |
| Prime factorization | 22 × 1571 | 27 × 51 |
| Prime factorization | 2 × 2 × 157 | 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 |
| Divisors count | 6 | 16 |
| Divisors | 1, 2, 4, 157, 314, 628 | 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640 |
| Number of properties | 0 | 0 |
| Roman numberals | DCXXVIII | DCXL |
| Base 2 | 10011101002 | 10100000002 |
| Base 3 | 2120213 | 2122013 |
| Base 4 | 213104 | 220004 |
| Base 5 | 100035 | 100305 |
| Base 6 | 25246 | 25446 |
| Base 7 | 15557 | 16037 |
| Base 8 | 11648 | 12008 |
| Base 9 | 7679 | 7819 |
| Base 10 | 62810 | 64010 |
| Base 11 | 52111 | 53211 |
| Base 12 | 44412 | 45412 |
| Base 13 | 39413 | 3a313 |
| Base 14 | 32c14 | 33a14 |
| Base 15 | 2bd15 | 2ca15 |
| Base 16 | 27416 | 28016 |