113415228 has 120 divisors (see below), whose sum is σ = 320166000. Its totient is φ = 34877952.

The previous prime is 113415221. The next prime is 113415229. The reversal of 113415228 is 822514311.

113415228 is a `hidden beast` number, since 1 + 134 + 1 + 522 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113415221) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 324798 + ... + 325146.

It is an arithmetic number, because the mean of its divisors is an integer number (2668050).

Almost surely, 2^113415228 is an apocalyptic number.

113415228 is a gapful number since it is divisible by the number (18) 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 113415228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160083000).

113415228 is an abundant number, since it is smaller than the sum of its proper divisors (206750772).

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

113415228 is a wasteful number, since it uses less digits than its factorization.

113415228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 430 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 113415228 is about 10649.6585860768. The cubic root of 113415228 is about 484.0502588794.

Adding to 113415228 its reverse (822514311), we get a palindrome (935929539).

The spelling of 113415228 in words is "one hundred thirteen million, four hundred fifteen thousand, two hundred twenty-eight".