Numbers / 44

The Number 44

44 is composite: factorization 2^2 × 11. That gives 44 exactly 6 divisors: 1, 2, 4, 11, 22, 44. 44's proper divisors total just 40, 4 short of 44, the deficient case most of 44's neighbors share too. 44 is also a palindrome, since 44 reads identically forwards and backwards. 44 has a digit sum of 8; for 44, the digital root works out to 8. 44: 2, 4, 11 all divide 44 evenly, out of 2-12. 44 is 101100 in binary and 2C in hex; as a Roman numeral it's XLIV.