117819880 has 16 divisors (see below), whose sum is σ = 265094820. Its totient is φ = 47127936.

The previous prime is 117819859. The next prime is 117819899. The reversal of 117819880 is 88918711.

It can be written as a sum of positive squares in 2 ways, for example, as 107205316 + 10614564 = 10354^2 + 3258^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1472709 + ... + 1472788.

Almost surely, 2^117819880 is an apocalyptic number.

117819880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117819880 is an abundant number, since it is smaller than the sum of its proper divisors (147274940).

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

117819880 is a wasteful number, since it uses less digits than its factorization.

117819880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945508 (or 2945504 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 43.

The square root of 117819880 is about 10854.4866299609. The cubic root of 117819880 is about 490.2371197207.

The spelling of 117819880 in words is "one hundred seventeen million, eight hundred nineteen thousand, eight hundred eighty".