Numbers / 320

The Number 320

320 is composite: factorization 2^6 × 5. That gives 320 exactly 14 divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320. 320's proper divisors total 442, 122 more than 320 itself, so 320 is abundant. 320 has a digit sum of 5; for 320, the digital root works out to 5. 320: 2, 4, 5, 8, 10 all divide 320 evenly, out of 2-12. 320 is 101000000 in binary and 140 in hex; as a Roman numeral it's CCCXX.