Numbers / 624
The Number 624
624 is composite: factorization 2^4 × 3 × 13. That gives 624 exactly 20 divisors: 1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624. 624's proper divisors total 1112, 488 more than 624 itself, so 624 is abundant. 624 has a digit sum of 12; for 624, the digital root works out to 3. 624: 2, 3, 4, 6, 8, 12 all divide 624 evenly, out of 2-12. 624 is 1001110000 in binary and 270 in hex; as a Roman numeral it's DCXXIV.