117515916 has 144 divisors (see below), whose sum is σ = 358758400. Its totient is φ = 32387040.

The previous prime is 117515899. The next prime is 117515921. The reversal of 117515916 is 619515711.

117515916 is a `hidden beast` number, since 1 + 17 + 51 + 591 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (9450) is a multiple of the sum of its prime divisors (350).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 382635 + ... + 382941.

Almost surely, 2^117515916 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 117515916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179379200).

117515916 is an abundant number, since it is smaller than the sum of its proper divisors (241242484).

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

117515916 is a wasteful number, since it uses less digits than its factorization.

117515916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 350 counting only the distinct ones).

The product of its digits is 9450, while the sum is 36.

The square root of 117515916 is about 10840.4758198153. The cubic root of 117515916 is about 489.8151683842.

The spelling of 117515916 in words is "one hundred seventeen million, five hundred fifteen thousand, nine hundred sixteen".