28560564 has 36 divisors (see below), whose sum is σ = 72369024. Its totient is φ = 9497232.

The previous prime is 28560551. The next prime is 28560589. The reversal of 28560564 is 46506582.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21199 + ... + 22505.

Almost surely, 2^28560564 is an apocalyptic number.

It is an amenable number.

28560564 is an abundant number, since it is smaller than the sum of its proper divisors (43808460).

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

28560564 is a wasteful number, since it uses less digits than its factorization.

28560564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924 (or 1919 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 28560564 is about 5344.2084540182. The cubic root of 28560564 is about 305.6719539688.

The spelling of 28560564 in words is "twenty-eight million, five hundred sixty thousand, five hundred sixty-four".