Numbers / 273

The Number 273

273 is composite: factorization 3 × 7 × 13. That gives 273 exactly 8 divisors: 1, 3, 7, 13, 21, 39, 91, 273. 273's proper divisors total just 175, 98 short of 273, the deficient case most of 273's neighbors share too. 273 has a digit sum of 12; for 273, the digital root works out to 3. 273: 3, 7 all divide 273 evenly, out of 2-12. 273 is 100010001 in binary and 111 in hex; as a Roman numeral it's CCLXXIII.