Compare 28 vs 30
| Property | 28 | 30 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 3 |
| Total factors | 3 | 3 |
| Prime factorization | 22 × 71 | 21 × 31 × 51 |
| Prime factorization | 2 × 2 × 7 | 2 × 3 × 5 |
| Divisors count | 6 | 8 |
| Divisors | 1, 2, 4, 7, 14, 28 | 1, 2, 3, 5, 6, 10, 15, 30 |
| Number of properties | 0 | 0 |
| Roman numberals | XXVIII | XXX |
| Base 2 | 111002 | 111102 |
| Base 3 | 10013 | 10103 |
| Base 4 | 1304 | 1324 |
| Base 5 | 1035 | 1105 |
| Base 6 | 446 | 506 |
| Base 7 | 407 | 427 |
| Base 8 | 348 | 368 |
| Base 9 | 319 | 339 |
| Base 10 | 2810 | 3010 |
| Base 11 | 2611 | 2811 |
| Base 12 | 2412 | 2612 |
| Base 13 | 2213 | 2413 |
| Base 14 | 2014 | 2214 |
| Base 15 | 1d15 | 2015 |
| Base 16 | 1c16 | 1e16 |