Numbers / 904

The Number 904

904 is composite: factorization 2^3 × 113. That gives 904 exactly 8 divisors: 1, 2, 4, 8, 113, 226, 452, 904. 904's proper divisors total just 806, 98 short of 904, the deficient case most of 904's neighbors share too. 904 has a digit sum of 13; for 904, the digital root works out to 4. 904: 2, 4, 8 all divide 904 evenly, out of 2-12. 904 is 1110001000 in binary and 388 in hex; as a Roman numeral it's CMIV.