113512638 has 32 divisors (see below), whose sum is σ = 248140800. Its totient is φ = 34462080.

The previous prime is 113512627. The next prime is 113512639. The reversal of 113512638 is 836215311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113512639) 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, 14788 + ... + 21111.

It is an arithmetic number, because the mean of its divisors is an integer number (7754400).

Almost surely, 2^113512638 is an apocalyptic number.

113512638 is an abundant number, since it is smaller than the sum of its proper divisors (134628162).

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

113512638 is a wasteful number, since it uses less digits than its factorization.

113512638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35952.

The product of its digits is 4320, while the sum is 30.

The square root of 113512638 is about 10654.2309905502. The cubic root of 113512638 is about 484.1887994849.

Adding to 113512638 its reverse (836215311), we get a palindrome (949727949).

The spelling of 113512638 in words is "one hundred thirteen million, five hundred twelve thousand, six hundred thirty-eight".