Compare 638 vs 646
| Property | 638 | 646 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 3 |
| Total factors | 3 | 3 |
| Prime factorization | 21 × 111 × 291 | 21 × 171 × 191 |
| Prime factorization | 2 × 11 × 29 | 2 × 17 × 19 |
| Divisors count | 8 | 8 |
| Divisors | 1, 2, 11, 22, 29, 58, 319, 638 | 1, 2, 17, 19, 34, 38, 323, 646 |
| Number of properties | 0 | 0 |
| Roman numberals | DCXXXVIII | DCXLVI |
| Base 2 | 10011111102 | 10100001102 |
| Base 3 | 2121223 | 2122213 |
| Base 4 | 213324 | 220124 |
| Base 5 | 100235 | 100415 |
| Base 6 | 25426 | 25546 |
| Base 7 | 16017 | 16127 |
| Base 8 | 11768 | 12068 |
| Base 9 | 7789 | 7879 |
| Base 10 | 63810 | 64610 |
| Base 11 | 53011 | 53811 |
| Base 12 | 45212 | 45a12 |
| Base 13 | 3a113 | 3a913 |
| Base 14 | 33814 | 34214 |
| Base 15 | 2c815 | 2d115 |
| Base 16 | 27e16 | 28616 |