Numbers / 58

The Number 58

58 is composite: factorization 2 × 29. That gives 58 exactly 4 divisors: 1, 2, 29, 58. 58's proper divisors total just 32, 26 short of 58, the deficient case most of 58's neighbors share too. 58 has a digit sum of 13; for 58, the digital root works out to 4. 58: 2 all divide 58 evenly, out of 2-12. 58 is 111010 in binary and 3A in hex; as a Roman numeral it's LVIII.