Numbers / 168

The Number 168

168 is composite: factorization 2^3 × 3 × 7. That gives 168 exactly 16 divisors: 1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168. 168's proper divisors total 312, 144 more than 168 itself, so 168 is abundant. 168 has a digit sum of 15; for 168, the digital root works out to 6. 168: 2, 3, 4, 6, 7, 8, 12 all divide 168 evenly, out of 2-12. 168 is 10101000 in binary and A8 in hex; as a Roman numeral it's CLXVIII.