even, composite · 428th positive integer
The number 428
428 is an even composite number. It is the 428th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 107 |
| Divisors | 1, 2, 4, 107, 214, 428 |
| Binary | 110101100 |
| Hexadecimal | 0x1AC |
| Roman numeral | CDXXVIII |
| Digit sum | 14 |
| Properties | even, composite |
Frequently asked
Is 428 a prime number?
No. 428 is composite. Its prime factorization is 2 × 2 × 107.
What are the factors of 428?
The factors (divisors) of 428 are 1, 2, 4, 107, 214, 428.
What is 428 in binary?
428 in binary is 110101100. In hexadecimal it's 1AC.
What is 428 as a Roman numeral?
428 in Roman numerals is CDXXVIII.
What's the digit sum of 428?
Adding the digits of 428: 4 + 2 + 8 = 14.