117656220 has 96 divisors (see below), whose sum is σ = 363605760. Its totient is φ = 28188160.

The previous prime is 117656197. The next prime is 117656233. The reversal of 117656220 is 22656711.

It is a super-2 number, since 2×117656220² = 27685972209376800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57739 + ... + 59741.

It is an arithmetic number, because the mean of its divisors is an integer number (3787560).

Almost surely, 2^117656220 is an apocalyptic number.

117656220 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 117656220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181802880).

117656220 is an abundant number, since it is smaller than the sum of its proper divisors (245949540).

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

117656220 is a wasteful number, since it uses less digits than its factorization.

117656220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115 (or 2113 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 117656220 is about 10846.9451920806. The cubic root of 117656220 is about 490.0100233962.

The spelling of 117656220 in words is "one hundred seventeen million, six hundred fifty-six thousand, two hundred twenty".