228713256 has 48 divisors (see below), whose sum is σ = 640797300. Its totient is φ = 73608192.

The previous prime is 228713231. The next prime is 228713273. The reversal of 228713256 is 652317822.

It can be written as a sum of positive squares in 2 ways, for example, as 209265156 + 19448100 = 14466^2 + 4410^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 228713256.

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 11 ways as a sum of consecutive naturals, for example, 52681 + ... + 56856.

Almost surely, 2^228713256 is an apocalyptic number.

It is an amenable number.

228713256 is an abundant number, since it is smaller than the sum of its proper divisors (412084044).

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

228713256 is a wasteful number, since it uses less digits than its factorization.

228713256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109578 (or 109571 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 228713256 is about 15123.2686943002. The cubic root of 228713256 is about 611.5478526294.

The spelling of 228713256 in words is "two hundred twenty-eight million, seven hundred thirteen thousand, two hundred fifty-six".