117851904 has 54 divisors (see below), whose sum is σ = 339802736. Its totient is φ = 39283200.

The previous prime is 117851897. The next prime is 117851947. The reversal of 117851904 is 409158711.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23272 + ... + 27879.

Almost surely, 2^117851904 is an apocalyptic number.

It is an amenable number.

117851904 is an abundant number, since it is smaller than the sum of its proper divisors (221950832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117851904 is an equidigital number, since it uses as much as digits as its factorization.

117851904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51173 (or 51156 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 117851904 is about 10855.9616801092. The cubic root of 117851904 is about 490.2815319521.

It can be divided in two parts, 11785 and 1904, that added together give a square (13689 = 117²).

The spelling of 117851904 in words is "one hundred seventeen million, eight hundred fifty-one thousand, nine hundred four".