Numbers / 770

The Number 770

770 is composite: factorization 2 × 5 × 7 × 11. That gives 770 exactly 16 divisors: 1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770. 770's proper divisors total 958, 188 more than 770 itself, so 770 is abundant. 770 has a digit sum of 14; for 770, the digital root works out to 5. 770: 2, 5, 7, 10, 11 all divide 770 evenly, out of 2-12. 770 is 1100000010 in binary and 302 in hex; as a Roman numeral it's DCCLXX.