Numbers / 516

The Number 516

516 is composite: factorization 2^2 × 3 × 43. That gives 516 exactly 12 divisors: 1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 258, 516. 516's proper divisors total 716, 200 more than 516 itself, so 516 is abundant. 516 has a digit sum of 12; for 516, the digital root works out to 3. 516: 2, 3, 4, 6, 12 all divide 516 evenly, out of 2-12. 516 is 1000000100 in binary and 204 in hex; as a Roman numeral it's DXVI.