28564572 has 24 divisors (see below), whose sum is σ = 66906000. Its totient is φ = 9485056.

The previous prime is 28564559. The next prime is 28564621. The reversal of 28564572 is 27546582.

It is a self number, because there is not a number n which added to its sum of digits gives 28564572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1197 + ... + 7652.

It is an arithmetic number, because the mean of its divisors is an integer number (2787750).

Almost surely, 2^28564572 is an apocalyptic number.

It is an amenable number.

28564572 is an abundant number, since it is smaller than the sum of its proper divisors (38341428).

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

28564572 is a wasteful number, since it uses less digits than its factorization.

28564572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9125 (or 9123 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 28564572 is about 5344.5834262363. The cubic root of 28564572 is about 305.6862519578.

The spelling of 28564572 in words is "twenty-eight million, five hundred sixty-four thousand, five hundred seventy-two".