Numbers / 475

The Number 475

475 is composite: factorization 5^2 × 19. That gives 475 exactly 6 divisors: 1, 5, 19, 25, 95, 475. 475's proper divisors total just 145, 330 short of 475, the deficient case most of 475's neighbors share too. 475 has a digit sum of 16; for 475, the digital root works out to 7. 475: 5 all divide 475 evenly, out of 2-12. 475 is 111011011 in binary and 1DB in hex; as a Roman numeral it's CDLXXV.