117831864 has 32 divisors (see below), whose sum is σ = 295200000. Its totient is φ = 39194592.

The previous prime is 117831799. The next prime is 117831871. The reversal of 117831864 is 468138711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7057 + ... + 16895.

It is an arithmetic number, because the mean of its divisors is an integer number (9225000).

Almost surely, 2^117831864 is an apocalyptic number.

It is an amenable number.

117831864 is an abundant number, since it is smaller than the sum of its proper divisors (177368136).

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

117831864 is a wasteful number, since it uses less digits than its factorization.

117831864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10347 (or 10343 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 117831864 is about 10855.0386457166. The cubic root of 117831864 is about 490.2537405786.

The spelling of 117831864 in words is "one hundred seventeen million, eight hundred thirty-one thousand, eight hundred sixty-four".