564459228 has 72 divisors (see below), whose sum is σ = 1515281040. Its totient is φ = 176555520.

The previous prime is 564459227. The next prime is 564459241. The reversal of 564459228 is 822954465.

564459228 is a `hidden beast` number, since 56 + 4 + 4 + 592 + 2 + 8 = 666.

It is a super-2 number, since 2×564459228² = 637228440148711968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564459227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236883 + ... + 239253.

It is an arithmetic number, because the mean of its divisors is an integer number (21045570).

Almost surely, 2^564459228 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 564459228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (757640520).

564459228 is an abundant number, since it is smaller than the sum of its proper divisors (950821812).

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

564459228 is a wasteful number, since it uses less digits than its factorization.

564459228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787 (or 2782 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 564459228 is about 23758.3507003327. The cubic root of 564459228 is about 826.4391058371.

The spelling of 564459228 in words is "five hundred sixty-four million, four hundred fifty-nine thousand, two hundred twenty-eight".