Numbers / 528

The Number 528

528 is composite: factorization 2^4 × 3 × 11. That gives 528 exactly 20 divisors: 1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 132, 176, 264, 528. 528's proper divisors total 960, 432 more than 528 itself, so 528 is abundant. 528 is also the 32nd triangular number, the sum of 1 through 32. 528 has a digit sum of 15; for 528, the digital root works out to 6. 528: 2, 3, 4, 6, 8, 11, 12 all divide 528 evenly, out of 2-12. 528 is 1000010000 in binary and 210 in hex; as a Roman numeral it's DXXVIII.