117581264 has 80 divisors (see below), whose sum is σ = 248793600. Its totient is φ = 53706240.

The previous prime is 117581179. The next prime is 117581273. The reversal of 117581264 is 462185711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 789062 + ... + 789210.

It is an arithmetic number, because the mean of its divisors is an integer number (3109920).

Almost surely, 2^117581264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117581264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124396800).

117581264 is an abundant number, since it is smaller than the sum of its proper divisors (131212336).

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

117581264 is a wasteful number, since it uses less digits than its factorization.

117581264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 262 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 117581264 is about 10843.4894752566. The cubic root of 117581264 is about 489.9059433517.

The spelling of 117581264 in words is "one hundred seventeen million, five hundred eighty-one thousand, two hundred sixty-four".