even, composite · 80th positive integer
The number 80
80 is an even composite number. It is the 80th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 2 × 2 × 5 |
| Divisors | 1, 2, 4, 5, 8, 10, 16, 20, 40, 80 |
| Binary | 1010000 |
| Hexadecimal | 0x50 |
| Roman numeral | LXXX |
| Digit sum | 8 |
| Properties | even, composite |
Frequently asked
Is 80 a prime number?
No. 80 is composite. Its prime factorization is 2 × 2 × 2 × 2 × 5.
What are the factors of 80?
The factors (divisors) of 80 are 1, 2, 4, 5, 8, 10, 16, 20, 40, 80.
What is 80 in binary?
80 in binary is 1010000. In hexadecimal it's 50.
What is 80 as a Roman numeral?
80 in Roman numerals is LXXX.
What's the digit sum of 80?
Adding the digits of 80: 8 + 0 = 8.