117979928 has 16 divisors (see below), whose sum is σ = 241322760. Its totient is φ = 53627200.

The previous prime is 117979921. The next prime is 117979931. The reversal of 117979928 is 829979711.

It is a self number, because there is not a number n which added to its sum of digits gives 117979928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117979921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670253 + ... + 670428.

Almost surely, 2^117979928 is an apocalyptic number.

It is an amenable number.

117979928 is an abundant number, since it is smaller than the sum of its proper divisors (123342832).

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

117979928 is a wasteful number, since it uses less digits than its factorization.

117979928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340698 (or 1340694 counting only the distinct ones).

The product of its digits is 571536, while the sum is 53.

The square root of 117979928 is about 10861.8565632216. The cubic root of 117979928 is about 490.4590006959.

The spelling of 117979928 in words is "one hundred seventeen million, nine hundred seventy-nine thousand, nine hundred twenty-eight".