Numbers / 34

The Number 34

34 is composite: factorization 2 × 17. That gives 34 exactly 4 divisors: 1, 2, 17, 34. 34's proper divisors total just 20, 14 short of 34, the deficient case most of 34's neighbors share too. 34 is also a Fibonacci number, since 21 + 13 = 34. 34 has a digit sum of 7; for 34, the digital root works out to 7. 34: 2 all divide 34 evenly, out of 2-12. 34 is 100010 in binary and 22 in hex; as a Roman numeral it's XXXIV.