Numbers / 850

The Number 850

850 is composite: factorization 2 × 5^2 × 17. That gives 850 exactly 12 divisors: 1, 2, 5, 10, 17, 25, 34, 50, 85, 170, 425, 850. 850's proper divisors total just 824, 26 short of 850, the deficient case most of 850's neighbors share too. 850 has a digit sum of 13; for 850, the digital root works out to 4. 850: 2, 5, 10 all divide 850 evenly, out of 2-12. 850 is 1101010010 in binary and 352 in hex; as a Roman numeral it's DCCCL.