28485564 has 24 divisors (see below), whose sum is σ = 66571008. Its totient is φ = 9480240.

The previous prime is 28485563. The next prime is 28485571. The reversal of 28485564 is 46558482.

It is a super-2 number, since 2×28485564² = 1622854712796192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28485563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8269 + ... + 11195.

It is an arithmetic number, because the mean of its divisors is an integer number (2773792).

Almost surely, 2^28485564 is an apocalyptic number.

It is an amenable number.

28485564 is an abundant number, since it is smaller than the sum of its proper divisors (38085444).

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

28485564 is a wasteful number, since it uses less digits than its factorization.

28485564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3745 (or 3743 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 28485564 is about 5337.1868994818. The cubic root of 28485564 is about 305.4041547145.

The spelling of 28485564 in words is "twenty-eight million, four hundred eighty-five thousand, five hundred sixty-four".