Numbers / 730

The Number 730

730 is composite: factorization 2 × 5 × 73. That gives 730 exactly 8 divisors: 1, 2, 5, 10, 73, 146, 365, 730. 730's proper divisors total just 602, 128 short of 730, the deficient case most of 730's neighbors share too. 730 has a digit sum of 10; for 730, the digital root works out to 1. 730: 2, 5, 10 all divide 730 evenly, out of 2-12. 730 is 1011011010 in binary and 2DA in hex; as a Roman numeral it's DCCXXX.