Numbers / 507

The Number 507

507 is composite: factorization 3 × 13^2. That gives 507 exactly 6 divisors: 1, 3, 13, 39, 169, 507. 507's proper divisors total just 225, 282 short of 507, the deficient case most of 507's neighbors share too. 507 has a digit sum of 12; for 507, the digital root works out to 3. 507: 3 all divide 507 evenly, out of 2-12. 507 is 111111011 in binary and 1FB in hex; as a Roman numeral it's DVII.