Numbers / 622

The Number 622

622 is composite: factorization 2 × 311. That gives 622 exactly 4 divisors: 1, 2, 311, 622. 622's proper divisors total just 314, 308 short of 622, the deficient case most of 622's neighbors share too. 622 has a digit sum of 10; for 622, the digital root works out to 1. 622: 2 all divide 622 evenly, out of 2-12. 622 is 1001101110 in binary and 26E in hex; as a Roman numeral it's DCXXII.