117556920 has 160 divisors (see below), whose sum is σ = 425668320. Its totient is φ = 28926720.

The previous prime is 117556897. The next prime is 117556931. The reversal of 117556920 is 29655711.

117556920 is a `hidden beast` number, since 1 + 1 + 75 + 569 + 20 = 666.

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 39 ways as a sum of consecutive naturals, for example, 40725 + ... + 43515.

It is an arithmetic number, because the mean of its divisors is an integer number (2660427).

Almost surely, 2^117556920 is an apocalyptic number.

117556920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117556920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212834160).

117556920 is an abundant number, since it is smaller than the sum of its proper divisors (308111400).

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

117556920 is a wasteful number, since it uses less digits than its factorization.

117556920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827 (or 2814 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 117556920 is about 10842.3669002667. The cubic root of 117556920 is about 489.8721310105.

The spelling of 117556920 in words is "one hundred seventeen million, five hundred fifty-six thousand, nine hundred twenty".