113639900 has 144 divisors (see below), whose sum is σ = 292481280. Its totient is φ = 37862400.

The previous prime is 113639891. The next prime is 113639921. The reversal of 113639900 is 9936311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1103249 + ... + 1103351.

It is an arithmetic number, because the mean of its divisors is an integer number (2031120).

Almost surely, 2^113639900 is an apocalyptic number.

113639900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113639900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146240640).

113639900 is an abundant number, since it is smaller than the sum of its proper divisors (178841380).

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

113639900 is a wasteful number, since it uses less digits than its factorization.

113639900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 113639900 is about 10660.2016866474. The cubic root of 113639900 is about 484.3696774996.

The spelling of 113639900 in words is "one hundred thirteen million, six hundred thirty-nine thousand, nine hundred".