117782988 has 24 divisors (see below), whose sum is σ = 282255792. Its totient is φ = 38199744.

The previous prime is 117782969. The next prime is 117782993. The reversal of 117782988 is 889287711.

It is a self number, because there is not a number n which added to its sum of digits gives 117782988.

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, 132195 + ... + 133082.

It is an arithmetic number, because the mean of its divisors is an integer number (11760658).

Almost surely, 2^117782988 is an apocalyptic number.

It is an amenable number.

117782988 is an abundant number, since it is smaller than the sum of its proper divisors (164472804).

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

117782988 is a wasteful number, since it uses less digits than its factorization.

117782988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265321 (or 265319 counting only the distinct ones).

The product of its digits is 451584, while the sum is 51.

The square root of 117782988 is about 10852.7871074669. The cubic root of 117782988 is about 490.1859463651.

The spelling of 117782988 in words is "one hundred seventeen million, seven hundred eighty-two thousand, nine hundred eighty-eight".