Numbers / 726

The Number 726

726 is composite: factorization 2 × 3 × 11^2. That gives 726 exactly 12 divisors: 1, 2, 3, 6, 11, 22, 33, 66, 121, 242, 363, 726. 726's proper divisors total 870, 144 more than 726 itself, so 726 is abundant. 726 has a digit sum of 15; for 726, the digital root works out to 6. 726: 2, 3, 6, 11 all divide 726 evenly, out of 2-12. 726 is 1011010110 in binary and 2D6 in hex; as a Roman numeral it's DCCXXVI.