Compare 28 vs 33
| Property | 28 | 33 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 22 × 71 | 31 × 111 |
| Prime factorization | 2 × 2 × 7 | 3 × 11 |
| Divisors count | 6 | 4 |
| Divisors | 1, 2, 4, 7, 14, 28 | 1, 3, 11, 33 |
| Number of properties | 0 | 1 |
| Semiprimes | 11th | |
| Roman numberals | XXVIII | XXXIII |
| Base 2 | 111002 | 1000012 |
| Base 3 | 10013 | 10203 |
| Base 4 | 1304 | 2014 |
| Base 5 | 1035 | 1135 |
| Base 6 | 446 | 536 |
| Base 7 | 407 | 457 |
| Base 8 | 348 | 418 |
| Base 9 | 319 | 369 |
| Base 10 | 2810 | 3310 |
| Base 11 | 2611 | 3011 |
| Base 12 | 2412 | 2912 |
| Base 13 | 2213 | 2713 |
| Base 14 | 2014 | 2514 |
| Base 15 | 1d15 | 2315 |
| Base 16 | 1c16 | 2116 |