Numbers / 458
The Number 458
458 is composite: factorization 2 × 229. That gives 458 exactly 4 divisors: 1, 2, 229, 458. 458's proper divisors total just 232, 226 short of 458, the deficient case most of 458's neighbors share too. 458 has a digit sum of 17; for 458, the digital root works out to 8. 458: 2 all divide 458 evenly, out of 2-12. 458 is 111001010 in binary and 1CA in hex; as a Roman numeral it's CDLVIII.