113444520 has 128 divisors (see below), whose sum is σ = 402451200. Its totient is φ = 25030656.

The previous prime is 113444501. The next prime is 113444543. The reversal of 113444520 is 25444311.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22032 + ... + 26688.

It is an arithmetic number, because the mean of its divisors is an integer number (3144150).

Almost surely, 2^113444520 is an apocalyptic number.

113444520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113444520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201225600).

113444520 is an abundant number, since it is smaller than the sum of its proper divisors (289006680).

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

113444520 is a wasteful number, since it uses less digits than its factorization.

113444520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4707 (or 4703 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 113444520 is about 10651.0337526458. The cubic root of 113444520 is about 484.0919275335.

Adding to 113444520 its reverse (25444311), we get a palindrome (138888831).

It can be divided in two parts, 1134 and 44520, that added together give a palindrome (45654).

The spelling of 113444520 in words is "one hundred thirteen million, four hundred forty-four thousand, five hundred twenty".