113513820 has 48 divisors (see below), whose sum is σ = 363245568. Its totient is φ = 25945920.

The previous prime is 113513791. The next prime is 113513821. The reversal of 113513820 is 28315311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113513821) 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, 134716 + ... + 135555.

It is an arithmetic number, because the mean of its divisors is an integer number (7567616).

Almost surely, 2^113513820 is an apocalyptic number.

113513820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113513820 is an abundant number, since it is smaller than the sum of its proper divisors (249731748).

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

113513820 is a wasteful number, since it uses less digits than its factorization.

113513820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270290 (or 270288 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 113513820 is about 10654.2864613263. The cubic root of 113513820 is about 484.1904800883.

The spelling of 113513820 in words is "one hundred thirteen million, five hundred thirteen thousand, eight hundred twenty".