odd, composite · 805th positive integer
The number 805
805 is an odd composite number. It is the 805th positive integer.
Quick reference
| Prime factorization | 5 × 7 × 23 |
| Divisors | 1, 5, 7, 23, 35, 115, 161, 805 |
| Binary | 1100100101 |
| Hexadecimal | 0x325 |
| Roman numeral | DCCCV |
| Digit sum | 13 |
| Properties | odd, composite |
Frequently asked
Is 805 a prime number?
No. 805 is composite. Its prime factorization is 5 × 7 × 23.
What are the factors of 805?
The factors (divisors) of 805 are 1, 5, 7, 23, 35, 115, 161, 805.
What is 805 in binary?
805 in binary is 1100100101. In hexadecimal it's 325.
What is 805 as a Roman numeral?
805 in Roman numerals is DCCCV.
What's the digit sum of 805?
Adding the digits of 805: 8 + 0 + 5 = 13.