even, composite, Fibonacci, palindrome · 8th positive integer
The number 8
8 is an even composite number. It's known as the smallest cube greater than 1. It is the 8th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 2 |
| Divisors | 1, 2, 4, 8 |
| Binary | 1000 |
| Hexadecimal | 0x8 |
| Roman numeral | VIII |
| Digit sum | 8 |
| Properties | even, composite, Fibonacci, palindrome |
Why 8 is notable
The smallest cube greater than 1.
Frequently asked
Is 8 a prime number?
No. 8 is composite. Its prime factorization is 2 × 2 × 2.
What are the factors of 8?
The factors (divisors) of 8 are 1, 2, 4, 8.
What is 8 in binary?
8 in binary is 1000. In hexadecimal it's 8.
What is 8 as a Roman numeral?
8 in Roman numerals is VIII.
What's the digit sum of 8?
Adding the digits of 8: 8 = 8.