117081580 has 72 divisors (see below), whose sum is σ = 312043536. Its totient is φ = 36489600.

The previous prime is 117081577. The next prime is 117081593. The reversal of 117081580 is 85180711.

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, 5350 + ... + 16210.

It is an arithmetic number, because the mean of its divisors is an integer number (4333938).

Almost surely, 2^117081580 is an apocalyptic number.

117081580 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 117081580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156021768).

117081580 is an abundant number, since it is smaller than the sum of its proper divisors (194961956).

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

117081580 is a wasteful number, since it uses less digits than its factorization.

117081580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10895 (or 10886 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 31.

The square root of 117081580 is about 10820.4242061021. The cubic root of 117081580 is about 489.2109750485.

The spelling of 117081580 in words is "one hundred seventeen million, eighty-one thousand, five hundred eighty".