113642228 has 24 divisors (see below), whose sum is σ = 227899392. Its totient is φ = 48572064.

The previous prime is 113642167. The next prime is 113642233. The reversal of 113642228 is 822246311.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 113642228.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5426 + ... + 16022.

It is an arithmetic number, because the mean of its divisors is an integer number (9495808).

Almost surely, 2^113642228 is an apocalyptic number.

It is an amenable number.

113642228 is an abundant number, since it is smaller than the sum of its proper divisors (114257164).

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

113642228 is a wasteful number, since it uses less digits than its factorization.

113642228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10991 (or 10989 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 113642228 is about 10660.3108772681. The cubic root of 113642228 is about 484.3729850378.

Adding to 113642228 its reverse (822246311), we get a palindrome (935888539).

The spelling of 113642228 in words is "one hundred thirteen million, six hundred forty-two thousand, two hundred twenty-eight".