Numbers / 508

The Number 508

508 is composite: factorization 2^2 × 127. That gives 508 exactly 6 divisors: 1, 2, 4, 127, 254, 508. 508's proper divisors total just 388, 120 short of 508, the deficient case most of 508's neighbors share too. 508 has a digit sum of 13; for 508, the digital root works out to 4. 508: 2, 4 all divide 508 evenly, out of 2-12. 508 is 111111100 in binary and 1FC in hex; as a Roman numeral it's DVIII.