Compare 1438 vs 1440
| Property | 1438 | 1440 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 8 |
| Prime factorization | 21 × 7191 | 25 × 32 × 51 |
| Prime factorization | 2 × 719 | 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 |
| Divisors count | 4 | 36 |
| Divisors | 1, 2, 719, 1438 | 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440 |
| Number of properties | 1 | 0 |
| Semiprimes | 424th | |
| Roman numberals | MCDXXXVIII | MCDXL |
| Base 2 | 101100111102 | 101101000002 |
| Base 3 | 12220213 | 12221003 |
| Base 4 | 1121324 | 1122004 |
| Base 5 | 212235 | 212305 |
| Base 6 | 103546 | 104006 |
| Base 7 | 41237 | 41257 |
| Base 8 | 26368 | 26408 |
| Base 9 | 18679 | 18709 |
| Base 10 | 143810 | 144010 |
| Base 11 | 109811 | 109a11 |
| Base 12 | 9ba12 | a0012 |
| Base 13 | 86813 | 86a13 |
| Base 14 | 74a14 | 74c14 |
| Base 15 | 65d15 | 66015 |
| Base 16 | 59e16 | 5a016 |