113225728 has 104 divisors (see below), whose sum is σ = 283080960. Its totient is φ = 43991040.

The previous prime is 113225713. The next prime is 113225741. The reversal of 113225728 is 827522311.

It is a super-2 number, since 2×113225728² = 25640130962259968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113225728.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315213 + ... + 315571.

Almost surely, 2^113225728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113225728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141540480).

113225728 is an abundant number, since it is smaller than the sum of its proper divisors (169855232).

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

113225728 is an equidigital number, since it uses as much as digits as its factorization.

113225728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 379 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 113225728 is about 10640.7578677461. The cubic root of 113225728 is about 483.7805165622.

The spelling of 113225728 in words is "one hundred thirteen million, two hundred twenty-five thousand, seven hundred twenty-eight".