Numbers / 190

The Number 190

190 is composite: factorization 2 × 5 × 19. That gives 190 exactly 8 divisors: 1, 2, 5, 10, 19, 38, 95, 190. 190's proper divisors total just 170, 20 short of 190, the deficient case most of 190's neighbors share too. 190 is also the 19th triangular number, the sum of 1 through 19. 190 has a digit sum of 10; for 190, the digital root works out to 1. 190: 2, 5, 10 all divide 190 evenly, out of 2-12. 190 is 10111110 in binary and BE in hex; as a Roman numeral it's CXC.