113865388 has 48 divisors (see below), whose sum is σ = 259689024. Its totient is φ = 42393600.

The previous prime is 113865383. The next prime is 113865403. The reversal of 113865388 is 883568311.

It is not an unprimeable number, because it can be changed into a prime (113865383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3013 + ... + 15388.

It is an arithmetic number, because the mean of its divisors is an integer number (5410188).

Almost surely, 2^113865388 is an apocalyptic number.

It is an amenable number.

113865388 is an abundant number, since it is smaller than the sum of its proper divisors (145823636).

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

113865388 is a wasteful number, since it uses less digits than its factorization.

113865388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18442 (or 18440 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 113865388 is about 10670.7726055802. The cubic root of 113865388 is about 484.6898332148.

The spelling of 113865388 in words is "one hundred thirteen million, eight hundred sixty-five thousand, three hundred eighty-eight".