Numbers / 38

The Number 38

38 is composite: factorization 2 × 19. That gives 38 exactly 4 divisors: 1, 2, 19, 38. 38's proper divisors total just 22, 16 short of 38, the deficient case most of 38's neighbors share too. 38 has a digit sum of 11; for 38, the digital root works out to 2. 38: 2 all divide 38 evenly, out of 2-12. 38 is 100110 in binary and 26 in hex; as a Roman numeral it's XXXVIII.