117286656 has 36 divisors (see below), whose sum is σ = 312155592. Its totient is φ = 39095296.

The previous prime is 117286613. The next prime is 117286661. The reversal of 117286656 is 656682711.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 5.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75591 + ... + 77126.

Almost surely, 2^117286656 is an apocalyptic number.

117286656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

117286656 is an abundant number, since it is smaller than the sum of its proper divisors (194868936).

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

117286656 is an equidigital number, since it uses as much as digits as its factorization.

117286656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152736 (or 152722 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 117286656 is about 10829.8963983964. The cubic root of 117286656 is about 489.4964367222.

The spelling of 117286656 in words is "one hundred seventeen million, two hundred eighty-six thousand, six hundred fifty-six".