117978368 has 36 divisors (see below), whose sum is σ = 249357780. Its totient is φ = 55517184.

The previous prime is 117978359. The next prime is 117978379. The reversal of 117978368 is 863879711.

It can be written as a sum of positive squares in 2 ways, for example, as 64513024 + 53465344 = 8032^2 + 7312^2 .

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, 9203 + ... + 17906.

It is an arithmetic number, because the mean of its divisors is an integer number (6926605).

Almost surely, 2^117978368 is an apocalyptic number.

It is an amenable number.

117978368 is an abundant number, since it is smaller than the sum of its proper divisors (131379412).

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

117978368 is an equidigital number, since it uses as much as digits as its factorization.

117978368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27142 (or 27128 counting only the distinct ones).

The product of its digits is 508032, while the sum is 50.

The square root of 117978368 is about 10861.7847520562. The cubic root of 117978368 is about 490.4568389740.

The spelling of 117978368 in words is "one hundred seventeen million, nine hundred seventy-eight thousand, three hundred sixty-eight".