117688840 has 16 divisors (see below), whose sum is σ = 264799980. Its totient is φ = 47075520.

The previous prime is 117688817. The next prime is 117688843. The reversal of 117688840 is 48886711.

It can be written as a sum of positive squares in 2 ways, for example, as 117548964 + 139876 = 10842^2 + 374^2 .

It is not an unprimeable number, because it can be changed into a prime (117688843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1471071 + ... + 1471150.

Almost surely, 2^117688840 is an apocalyptic number.

117688840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117688840 is an abundant number, since it is smaller than the sum of its proper divisors (147111140).

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

117688840 is a wasteful number, since it uses less digits than its factorization.

117688840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942232 (or 2942228 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 43.

The square root of 117688840 is about 10848.4487370315. The cubic root of 117688840 is about 490.0553040452.

The spelling of 117688840 in words is "one hundred seventeen million, six hundred eighty-eight thousand, eight hundred forty".