117520812 has 36 divisors (see below), whose sum is σ = 297777480. Its totient is φ = 39079872.

The previous prime is 117520787. The next prime is 117520817. The reversal of 117520812 is 218025711.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×117520812² = 27622282506278688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117520817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12264 + ... + 19632.

Almost surely, 2^117520812 is an apocalyptic number.

117520812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117520812 is an abundant number, since it is smaller than the sum of its proper divisors (180256668).

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

117520812 is a wasteful number, since it uses less digits than its factorization.

117520812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7822 (or 7817 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 117520812 is about 10840.7016378092. The cubic root of 117520812 is about 489.8219705883.

The spelling of 117520812 in words is "one hundred seventeen million, five hundred twenty thousand, eight hundred twelve".