28564552 has 8 divisors (see below), whose sum is σ = 53558550. Its totient is φ = 14282272.

The previous prime is 28564541. The next prime is 28564559. The reversal of 28564552 is 25546582.

It can be written as a sum of positive squares in only one way, i.e., 23872996 + 4691556 = 4886^2 + 2166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28564559) by changing a digit.

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 as a sum of consecutive naturals, namely, 1785277 + ... + 1785292.

Almost surely, 2^28564552 is an apocalyptic number.

It is an amenable number.

28564552 is a deficient number, since it is larger than the sum of its proper divisors (24993998).

28564552 is a wasteful number, since it uses less digits than its factorization.

28564552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570575 (or 3570571 counting only the distinct ones).

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

The square root of 28564552 is about 5344.5815551828. The cubic root of 28564552 is about 305.6861806138.

The spelling of 28564552 in words is "twenty-eight million, five hundred sixty-four thousand, five hundred fifty-two".