117915870 has 16 divisors (see below), whose sum is σ = 282998160. Its totient is φ = 31444224.

The previous prime is 117915869. The next prime is 117915887. The reversal of 117915870 is 78519711.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1965235 + ... + 1965294.

It is an arithmetic number, because the mean of its divisors is an integer number (17687385).

Almost surely, 2^117915870 is an apocalyptic number.

117915870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117915870 is an abundant number, since it is smaller than the sum of its proper divisors (165082290).

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

117915870 is a wasteful number, since it uses less digits than its factorization.

117915870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930539.

The product of its (nonzero) digits is 17640, while the sum is 39.

The square root of 117915870 is about 10858.9074036019. The cubic root of 117915870 is about 490.3702186150.

The spelling of 117915870 in words is "one hundred seventeen million, nine hundred fifteen thousand, eight hundred seventy".