Numbers / 454

The Number 454

454 is composite: factorization 2 × 227. That gives 454 exactly 4 divisors: 1, 2, 227, 454. 454's proper divisors total just 230, 224 short of 454, the deficient case most of 454's neighbors share too. 454 is also a palindrome, since 454 reads identically forwards and backwards. 454 has a digit sum of 13; for 454, the digital root works out to 4. 454: 2 all divide 454 evenly, out of 2-12. 454 is 111000110 in binary and 1C6 in hex; as a Roman numeral it's CDLIV.