Numbers / 822

The Number 822

822 is composite: factorization 2 × 3 × 137. That gives 822 exactly 8 divisors: 1, 2, 3, 6, 137, 274, 411, 822. 822's proper divisors total 834, 12 more than 822 itself, so 822 is abundant. 822 has a digit sum of 12; for 822, the digital root works out to 3. 822: 2, 3, 6 all divide 822 evenly, out of 2-12. 822 is 1100110110 in binary and 336 in hex; as a Roman numeral it's DCCCXXII.