odd, composite · 815th positive integer
The number 815
815 is an odd composite number. It is the 815th positive integer.
Quick reference
| Prime factorization | 5 × 163 |
| Divisors | 1, 5, 163, 815 |
| Binary | 1100101111 |
| Hexadecimal | 0x32F |
| Roman numeral | DCCCXV |
| Digit sum | 14 |
| Properties | odd, composite |
Frequently asked
Is 815 a prime number?
No. 815 is composite. Its prime factorization is 5 × 163.
What are the factors of 815?
The factors (divisors) of 815 are 1, 5, 163, 815.
What is 815 in binary?
815 in binary is 1100101111. In hexadecimal it's 32F.
What is 815 as a Roman numeral?
815 in Roman numerals is DCCCXV.
What's the digit sum of 815?
Adding the digits of 815: 8 + 1 + 5 = 14.