even, composite, triangular · 78th positive integer
The number 78
78 is an even composite number. It is the 78th positive integer.
Quick reference
| Prime factorization | 2 × 3 × 13 |
| Divisors | 1, 2, 3, 6, 13, 26, 39, 78 |
| Binary | 1001110 |
| Hexadecimal | 0x4E |
| Roman numeral | LXXVIII |
| Digit sum | 15 |
| Properties | even, composite, triangular |
Frequently asked
Is 78 a prime number?
No. 78 is composite. Its prime factorization is 2 × 3 × 13.
What are the factors of 78?
The factors (divisors) of 78 are 1, 2, 3, 6, 13, 26, 39, 78.
What is 78 in binary?
78 in binary is 1001110. In hexadecimal it's 4E.
What is 78 as a Roman numeral?
78 in Roman numerals is LXXVIII.
What's the digit sum of 78?
Adding the digits of 78: 7 + 8 = 15.