28523504 has 20 divisors (see below), whose sum is σ = 55376664. Its totient is φ = 14232768.

The previous prime is 28523477. The next prime is 28523507. The reversal of 28523504 is 40532582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28523507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7874 + ... + 10910.

Almost surely, 2^28523504 is an apocalyptic number.

It is an amenable number.

28523504 is a deficient number, since it is larger than the sum of its proper divisors (26853160).

28523504 is a wasteful number, since it uses less digits than its factorization.

28523504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632 (or 3626 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 28523504 is about 5340.7400236297. The cubic root of 28523504 is about 305.5396841024.

The spelling of 28523504 in words is "twenty-eight million, five hundred twenty-three thousand, five hundred four".