113132220 has 48 divisors (see below), whose sum is σ = 318893568. Its totient is φ = 29966400.

The previous prime is 113132209. The next prime is 113132233. The reversal of 113132220 is 22231311.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 113132220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2817 + ... + 15303.

It is an arithmetic number, because the mean of its divisors is an integer number (6643616).

Almost surely, 2^113132220 is an apocalyptic number.

113132220 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 113132220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159446784).

113132220 is an abundant number, since it is smaller than the sum of its proper divisors (205761348).

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

113132220 is a wasteful number, since it uses less digits than its factorization.

113132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12650 (or 12648 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 113132220 is about 10636.3631002331. The cubic root of 113132220 is about 483.6473024120.

Adding to 113132220 its reverse (22231311), we get a palindrome (135363531).

Subtracting from 113132220 its reverse (22231311), we obtain a palindrome (90900909).

The spelling of 113132220 in words is "one hundred thirteen million, one hundred thirty-two thousand, two hundred twenty".