Numbers / 838

The Number 838

838 is composite: factorization 2 × 419. That gives 838 exactly 4 divisors: 1, 2, 419, 838. 838's proper divisors total just 422, 416 short of 838, the deficient case most of 838's neighbors share too. 838 is also a palindrome, since 838 reads identically forwards and backwards. 838 has a digit sum of 19; for 838, the digital root works out to 1. 838: 2 all divide 838 evenly, out of 2-12. 838 is 1101000110 in binary and 346 in hex; as a Roman numeral it's DCCCXXXVIII.