117790164 has 36 divisors (see below), whose sum is σ = 299484276. Its totient is φ = 39034368.

The previous prime is 117790163. The next prime is 117790181. The reversal of 117790164 is 461097711.

It can be written as a sum of positive squares in 2 ways, for example, as 111133764 + 6656400 = 10542^2 + 2580^2 .

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117790163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3229 + ... + 15684.

Almost surely, 2^117790164 is an apocalyptic number.

It is an amenable number.

117790164 is an abundant number, since it is smaller than the sum of its proper divisors (181694112).

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

117790164 is a wasteful number, since it uses less digits than its factorization.

117790164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19096 (or 19091 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 117790164 is about 10853.1177087508. The cubic root of 117790164 is about 490.1959011217.

The spelling of 117790164 in words is "one hundred seventeen million, seven hundred ninety thousand, one hundred sixty-four".