117871980 has 48 divisors (see below), whose sum is σ = 330570240. Its totient is φ = 31382208.

The previous prime is 117871967. The next prime is 117871981. The reversal of 117871980 is 89178711.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (117871981) 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, 50397 + ... + 52683.

It is an arithmetic number, because the mean of its divisors is an integer number (6886880).

Almost surely, 2^117871980 is an apocalyptic number.

117871980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117871980 is an abundant number, since it is smaller than the sum of its proper divisors (212698260).

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

117871980 is a wasteful number, since it uses less digits than its factorization.

117871980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158 (or 3156 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 42.

The square root of 117871980 is about 10856.8862939611. The cubic root of 117871980 is about 490.3093700915.

The spelling of 117871980 in words is "one hundred seventeen million, eight hundred seventy-one thousand, nine hundred eighty".