113215520 has 48 divisors (see below), whose sum is σ = 291791808. Its totient is φ = 41168640.

The previous prime is 113215483. The next prime is 113215561. The reversal of 113215520 is 25512311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 113215492 and 113215501.

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, 30404 + ... + 33923.

It is an arithmetic number, because the mean of its divisors is an integer number (6078996).

Almost surely, 2^113215520 is an apocalyptic number.

113215520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113215520 is an abundant number, since it is smaller than the sum of its proper divisors (178576288).

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

113215520 is a wasteful number, since it uses less digits than its factorization.

113215520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64353 (or 64345 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 113215520 is about 10640.2781918519. The cubic root of 113215520 is about 483.7659775229.

Adding to 113215520 its reverse (25512311), we get a palindrome (138727831).

The spelling of 113215520 in words is "one hundred thirteen million, two hundred fifteen thousand, five hundred twenty".