Numbers / 856

The Number 856

856 is composite: factorization 2^3 × 107. That gives 856 exactly 8 divisors: 1, 2, 4, 8, 107, 214, 428, 856. 856's proper divisors total just 764, 92 short of 856, the deficient case most of 856's neighbors share too. 856 has a digit sum of 19; for 856, the digital root works out to 1. 856: 2, 4, 8 all divide 856 evenly, out of 2-12. 856 is 1101011000 in binary and 358 in hex; as a Roman numeral it's DCCCLVI.