113257720 has 32 divisors (see below), whose sum is σ = 255546720. Its totient is φ = 45175680.

The previous prime is 113257699. The next prime is 113257721. The reversal of 113257720 is 27752311.

It is a super-2 number, since 2×113257720² = 25654622279196800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113257721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11125 + ... + 18715.

It is an arithmetic number, because the mean of its divisors is an integer number (7985835).

Almost surely, 2^113257720 is an apocalyptic number.

113257720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113257720 is an abundant number, since it is smaller than the sum of its proper divisors (142289000).

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

113257720 is a wasteful number, since it uses less digits than its factorization.

113257720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7975 (or 7971 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 113257720 is about 10642.2610379562. The cubic root of 113257720 is about 483.8260764336.

The spelling of 113257720 in words is "one hundred thirteen million, two hundred fifty-seven thousand, seven hundred twenty".