117769878 has 24 divisors (see below), whose sum is σ = 258666408. Its totient is φ = 38718432.

The previous prime is 117769877. The next prime is 117769889. The reversal of 117769878 is 878967711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117769877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43500 + ... + 46127.

It is an arithmetic number, because the mean of its divisors is an integer number (10777767).

Almost surely, 2^117769878 is an apocalyptic number.

117769878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

117769878 is an abundant number, since it is smaller than the sum of its proper divisors (140896530).

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

117769878 is a wasteful number, since it uses less digits than its factorization.

117769878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89708 (or 89705 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 54.

The square root of 117769878 is about 10852.1830983448. The cubic root of 117769878 is about 490.1677587465.

The spelling of 117769878 in words is "one hundred seventeen million, seven hundred sixty-nine thousand, eight hundred seventy-eight".