117917078 has 32 divisors (see below), whose sum is σ = 192291840. Its totient is φ = 54051840.

The previous prime is 117917071. The next prime is 117917089. The reversal of 117917078 is 870719711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117917071) 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 15 ways as a sum of consecutive naturals, for example, 183638 + ... + 184278.

It is an arithmetic number, because the mean of its divisors is an integer number (6009120).

Almost surely, 2^117917078 is an apocalyptic number.

117917078 is a deficient number, since it is larger than the sum of its proper divisors (74374762).

117917078 is a wasteful number, since it uses less digits than its factorization.

117917078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812.

The product of its (nonzero) digits is 24696, while the sum is 41.

The square root of 117917078 is about 10858.9630259984. The cubic root of 117917078 is about 490.3718931569.

The spelling of 117917078 in words is "one hundred seventeen million, nine hundred seventeen thousand, seventy-eight".