Numbers / 35

The Number 35

35 is composite: factorization 5 × 7. That gives 35 exactly 4 divisors: 1, 5, 7, 35. 35's proper divisors total just 13, 22 short of 35, the deficient case most of 35's neighbors share too. 35 has a digit sum of 8; for 35, the digital root works out to 8. 35: 5, 7 all divide 35 evenly, out of 2-12. 35 is 100011 in binary and 23 in hex; as a Roman numeral it's XXXV.