28552564 has 12 divisors (see below), whose sum is σ = 51185988. Its totient is φ = 13928000.

The previous prime is 28552553. The next prime is 28552577. The reversal of 28552564 is 46525582.

It can be written as a sum of positive squares in 2 ways, for example, as 5107600 + 23444964 = 2260^2 + 4842^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86887 + ... + 87214.

It is an arithmetic number, because the mean of its divisors is an integer number (4265499).

Almost surely, 2^28552564 is an apocalyptic number.

It is an amenable number.

28552564 is a deficient number, since it is larger than the sum of its proper divisors (22633424).

28552564 is a wasteful number, since it uses less digits than its factorization.

28552564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174146 (or 174144 counting only the distinct ones).

The product of its digits is 96000, while the sum is 37.

The square root of 28552564 is about 5343.4599277996. The cubic root of 28552564 is about 305.6434110685.

The spelling of 28552564 in words is "twenty-eight million, five hundred fifty-two thousand, five hundred sixty-four".