Numbers / 626

The Number 626

626 is composite: factorization 2 × 313. That gives 626 exactly 4 divisors: 1, 2, 313, 626. 626's proper divisors total just 316, 310 short of 626, the deficient case most of 626's neighbors share too. 626 is also a palindrome, since 626 reads identically forwards and backwards. 626 has a digit sum of 14; for 626, the digital root works out to 5. 626: 2 all divide 626 evenly, out of 2-12. 626 is 1001110010 in binary and 272 in hex; as a Roman numeral it's DCXXVI.