113639072 has 12 divisors (see below), whose sum is σ = 223726986. Its totient is φ = 56819520.

The previous prime is 113639063. The next prime is 113639077. The reversal of 113639072 is 270936311.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 105596176 + 8042896 = 10276^2 + 2836^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 3551221 = 113639072 / (1 + 1 + 3 + 6 + 3 + 9 + 0 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (113639077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1775579 + ... + 1775642.

Almost surely, 2^113639072 is an apocalyptic number.

It is an amenable number.

113639072 is a deficient number, since it is larger than the sum of its proper divisors (110087914).

113639072 is an equidigital number, since it uses as much as digits as its factorization.

113639072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551231 (or 3551223 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 113639072 is about 10660.1628505384. The cubic root of 113639072 is about 484.3685010963.

The spelling of 113639072 in words is "one hundred thirteen million, six hundred thirty-nine thousand, seventy-two".