Numbers / 195

The Number 195

195 is composite: factorization 3 × 5 × 13. That gives 195 exactly 8 divisors: 1, 3, 5, 13, 15, 39, 65, 195. 195's proper divisors total just 141, 54 short of 195, the deficient case most of 195's neighbors share too. 195 has a digit sum of 15; for 195, the digital root works out to 6. 195: 3, 5 all divide 195 evenly, out of 2-12. 195 is 11000011 in binary and C3 in hex; as a Roman numeral it's CXCV.