Numbers / 803

The Number 803

803 is composite: factorization 11 × 73. That gives 803 exactly 4 divisors: 1, 11, 73, 803. 803's proper divisors total just 85, 718 short of 803, the deficient case most of 803's neighbors share too. 803 has a digit sum of 11; for 803, the digital root works out to 2. 803: 11 all divide 803 evenly, out of 2-12. 803 is 1100100011 in binary and 323 in hex; as a Roman numeral it's DCCCIII.