228563772 has 24 divisors (see below), whose sum is σ = 543379536. Its totient is φ = 74750208.

The previous prime is 228563771. The next prime is 228563801. The reversal of 228563772 is 277365822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228563771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179053 + ... + 180324.

It is an arithmetic number, because the mean of its divisors is an integer number (22640814).

Almost surely, 2^228563772 is an apocalyptic number.

It is an amenable number.

228563772 is an abundant number, since it is smaller than the sum of its proper divisors (314815764).

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

228563772 is a wasteful number, since it uses less digits than its factorization.

228563772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359437 (or 359435 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 228563772 is about 15118.3257009498. The cubic root of 228563772 is about 611.4145903599.

The spelling of 228563772 in words is "two hundred twenty-eight million, five hundred sixty-three thousand, seven hundred seventy-two".