Numbers / 82

The Number 82

82 is composite: factorization 2 × 41. That gives 82 exactly 4 divisors: 1, 2, 41, 82. 82's proper divisors total just 44, 38 short of 82, the deficient case most of 82's neighbors share too. 82 has a digit sum of 10; for 82, the digital root works out to 1. 82: 2 all divide 82 evenly, out of 2-12. 82 is 1010010 in binary and 52 in hex; as a Roman numeral it's LXXXII.