117925920 has 144 divisors (see below), whose sum is σ = 459950400. Its totient is φ = 26952192.

The previous prime is 117925897. The next prime is 117925931. The reversal of 117925920 is 29529711.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4231 + ... + 15929.

It is an arithmetic number, because the mean of its divisors is an integer number (3194100).

Almost surely, 2^117925920 is an apocalyptic number.

117925920 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 117925920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229975200).

117925920 is an abundant number, since it is smaller than the sum of its proper divisors (342024480).

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

117925920 is a wasteful number, since it uses less digits than its factorization.

117925920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11727 (or 11716 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 117925920 is about 10859.3701474809. The cubic root of 117925920 is about 490.3841496793.

The spelling of 117925920 in words is "one hundred seventeen million, nine hundred twenty-five thousand, nine hundred twenty".