Compare 640420 vs 640426
| Property | 640420 | 640426 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 5 | 2 |
| Total factors | 6 | 2 |
| Prime factorization | 22 × 51 × 111 × 411 × 711 | 21 × 3202131 |
| Prime factorization | 2 × 2 × 5 × 11 × 41 × 71 | 2 × 320213 |
| Divisors count | 48 | 4 |
| Divisors | 1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 71, 82, 110, 142, 164, 205, 220, 284, 355, 410, 451, 710, 781, 820, 902, 1420, 1562, 1804, 2255, 2911, 3124, 3905, 4510, 5822, 7810, 9020, 11644, 14555, 15620, 29110, 32021, 58220, 64042, 128084, 160105, 320210, 640420 | 1, 2, 320213, 640426 |
| Number of properties | 0 | 1 |
| Semiprimes | 137228th | |
| Roman numberals | ||
| Base 2 | 100111000101101001002 | 100111000101101010102 |
| Base 3 | 10121121110213 | 10121121111113 |
| Base 4 | 21301122104 | 21301122224 |
| Base 5 | 1304431405 | 1304432015 |
| Base 6 | 214205246 | 214205346 |
| Base 7 | 53050547 | 53050637 |
| Base 8 | 23426448 | 23426528 |
| Base 9 | 11754379 | 11754449 |
| Base 10 | 64042010 | 64042610 |
| Base 11 | 3a818011 | 3a818611 |
| Base 12 | 26a74412 | 26a74a12 |
| Base 13 | 19566113 | 19566713 |
| Base 14 | 12956414 | 12956a14 |
| Base 15 | c9b4a15 | c9b5115 |
| Base 16 | 9c5a416 | 9c5aa16 |