113256220 has 96 divisors (see below), whose sum is σ = 298722816. Its totient is φ = 35040000.

The previous prime is 113256203. The next prime is 113256251. The reversal of 113256220 is 22652311.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 113256191 and 113256200.

It is a congruent number.

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, 386394 + ... + 386686.

It is an arithmetic number, because the mean of its divisors is an integer number (3111696).

Almost surely, 2^113256220 is an apocalyptic number.

113256220 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 113256220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149361408).

113256220 is an abundant number, since it is smaller than the sum of its proper divisors (185466596).

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

113256220 is a wasteful number, since it uses less digits than its factorization.

113256220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 113256220 is about 10642.1905639769. The cubic root of 113256220 is about 483.8239404724.

The spelling of 113256220 in words is "one hundred thirteen million, two hundred fifty-six thousand, two hundred twenty".