228580056 has 80 divisors (see below), whose sum is σ = 644252400. Its totient is φ = 75715776.

The previous prime is 228580039. The next prime is 228580057. The reversal of 228580056 is 650085822.

228580056 is a `hidden beast` number, since 2 + 28 + 580 + 0 + 56 = 666.

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 228580056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228580057) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 111085 + ... + 113123.

It is an arithmetic number, because the mean of its divisors is an integer number (8053155).

Almost surely, 2^228580056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228580056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322126200).

228580056 is an abundant number, since it is smaller than the sum of its proper divisors (415672344).

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

228580056 is a wasteful number, since it uses less digits than its factorization.

228580056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 228580056 is about 15118.8642430574. The cubic root of 228580056 is about 611.4291100694.

The spelling of 228580056 in words is "two hundred twenty-eight million, five hundred eighty thousand, fifty-six".