117989872 has 160 divisors (see below), whose sum is σ = 314979840. Its totient is φ = 41333760.

The previous prime is 117989831. The next prime is 117989891. The reversal of 117989872 is 278989711.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 848779 + ... + 848917.

It is an arithmetic number, because the mean of its divisors is an integer number (1968624).

Almost surely, 2^117989872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117989872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157489920).

117989872 is an abundant number, since it is smaller than the sum of its proper divisors (196989968).

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

117989872 is a wasteful number, since it uses less digits than its factorization.

117989872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 225 counting only the distinct ones).

The product of its digits is 508032, while the sum is 52.

The square root of 117989872 is about 10862.3143022102. The cubic root of 117989872 is about 490.4727798400.

It can be divided in two parts, 117 and 989872, that added together give a palindrome (989989).

The spelling of 117989872 in words is "one hundred seventeen million, nine hundred eighty-nine thousand, eight hundred seventy-two".