113233220 has 24 divisors (see below), whose sum is σ = 241050264. Its totient is φ = 44672256.

The previous prime is 113233193. The next prime is 113233229. The reversal of 113233220 is 22332311.

It can be written as a sum of positive squares in 4 ways, for example, as 3444736 + 109788484 = 1856^2 + 10478^2 .

It is a super-2 number, since 2×113233220² = 25643524223136800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113233229) 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, 37319 + ... + 40238.

It is an arithmetic number, because the mean of its divisors is an integer number (10043761).

Almost surely, 2^113233220 is an apocalyptic number.

113233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113233220 is an abundant number, since it is smaller than the sum of its proper divisors (127817044).

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

113233220 is a wasteful number, since it uses less digits than its factorization.

113233220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77639 (or 77637 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 113233220 is about 10641.1099045165. The cubic root of 113233220 is about 483.7911867039.

Adding to 113233220 its reverse (22332311), we get a palindrome (135565531).

Subtracting from 113233220 its reverse (22332311), we obtain a palindrome (90900909).

The spelling of 113233220 in words is "one hundred thirteen million, two hundred thirty-three thousand, two hundred twenty".