Numbers / 868

The Number 868

868 is composite: factorization 2^2 × 7 × 31. That gives 868 exactly 12 divisors: 1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868. 868's proper divisors total 924, 56 more than 868 itself, so 868 is abundant. 868 is also a palindrome, since 868 reads identically forwards and backwards. 868 has a digit sum of 22; for 868, the digital root works out to 4. 868: 2, 4, 7 all divide 868 evenly, out of 2-12. 868 is 1101100100 in binary and 364 in hex; as a Roman numeral it's DCCCLXVIII.