Compare 638 vs 644
| Property | 638 | 644 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 3 |
| Total factors | 3 | 4 |
| Prime factorization | 21 × 111 × 291 | 22 × 71 × 231 |
| Prime factorization | 2 × 11 × 29 | 2 × 2 × 7 × 23 |
| Divisors count | 8 | 12 |
| Divisors | 1, 2, 11, 22, 29, 58, 319, 638 | 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644 |
| Number of properties | 0 | 0 |
| Roman numberals | DCXXXVIII | DCXLIV |
| Base 2 | 10011111102 | 10100001002 |
| Base 3 | 2121223 | 2122123 |
| Base 4 | 213324 | 220104 |
| Base 5 | 100235 | 100345 |
| Base 6 | 25426 | 25526 |
| Base 7 | 16017 | 16107 |
| Base 8 | 11768 | 12048 |
| Base 9 | 7789 | 7859 |
| Base 10 | 63810 | 64410 |
| Base 11 | 53011 | 53611 |
| Base 12 | 45212 | 45812 |
| Base 13 | 3a113 | 3a713 |
| Base 14 | 33814 | 34014 |
| Base 15 | 2c815 | 2ce15 |
| Base 16 | 27e16 | 28416 |