28547764 has 12 divisors (see below), whose sum is σ = 57095584. Its totient is φ = 12234744.

The previous prime is 28547759. The next prime is 28547773. The reversal of 28547764 is 46774582.

28547764 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 28547764.

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, 509754 + ... + 509809.

Almost surely, 2^28547764 is an apocalyptic number.

It is an amenable number.

28547764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28547764 is a wasteful number, since it uses less digits than its factorization.

28547764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019574 (or 1019572 counting only the distinct ones).

The product of its digits is 376320, while the sum is 43.

The square root of 28547764 is about 5343.0107617335. The cubic root of 28547764 is about 305.6262827692.

The spelling of 28547764 in words is "twenty-eight million, five hundred forty-seven thousand, seven hundred sixty-four".