117809316 has 81 divisors (see below), whose sum is σ = 313918059. Its totient is φ = 38683656.

The previous prime is 117809309. The next prime is 117809317. The reversal of 117809316 is 613908711.

The square root of 117809316 is 10854.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (81).

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

It is not an unprimeable number, because it can be changed into a prime (117809317) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1758315 + ... + 1758381.

Almost surely, 2^117809316 is an apocalyptic number.

117809316 is the 10854-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117809316

117809316 is an abundant number, since it is smaller than the sum of its proper divisors (196108743).

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

117809316 is an frugal number, since it uses more digits than its factorization.

117809316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The cubic root of 117809316 is about 490.2224673555. Note that the first 3 decimals are identical.

Multiplying 117809316 by its sum of digits (36), we get a square (4241135376 = 65124²).

117809316 divided by its sum of digits (36) gives a square (3272481 = 1809²).

The spelling of 117809316 in words is "one hundred seventeen million, eight hundred nine thousand, three hundred sixteen".