even, composite · 638th positive integer
The number 638
638 is an even composite number. It is the 638th positive integer.
Quick reference
| Prime factorization | 2 × 11 × 29 |
| Divisors | 1, 2, 11, 22, 29, 58, 319, 638 |
| Binary | 1001111110 |
| Hexadecimal | 0x27E |
| Roman numeral | DCXXXVIII |
| Digit sum | 17 |
| Properties | even, composite |
Frequently asked
Is 638 a prime number?
No. 638 is composite. Its prime factorization is 2 × 11 × 29.
What are the factors of 638?
The factors (divisors) of 638 are 1, 2, 11, 22, 29, 58, 319, 638.
What is 638 in binary?
638 in binary is 1001111110. In hexadecimal it's 27E.
What is 638 as a Roman numeral?
638 in Roman numerals is DCXXXVIII.
What's the digit sum of 638?
Adding the digits of 638: 6 + 3 + 8 = 17.