Numbers / 804

The Number 804

804 is composite: factorization 2^2 × 3 × 67. That gives 804 exactly 12 divisors: 1, 2, 3, 4, 6, 12, 67, 134, 201, 268, 402, 804. 804's proper divisors total 1100, 296 more than 804 itself, so 804 is abundant. 804 has a digit sum of 12; for 804, the digital root works out to 3. 804: 2, 3, 4, 6, 12 all divide 804 evenly, out of 2-12. 804 is 1100100100 in binary and 324 in hex; as a Roman numeral it's DCCCIV.