28564936 has 16 divisors (see below), whose sum is σ = 53625600. Its totient is φ = 14264784.

The previous prime is 28564891. The next prime is 28564951. The reversal of 28564936 is 63946582.

It is a junction number, because it is equal to n+sod(n) for n = 28564892 and 28564901.

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, 6825 + ... + 10183.

It is an arithmetic number, because the mean of its divisors is an integer number (3351600).

Almost surely, 2^28564936 is an apocalyptic number.

It is an amenable number.

28564936 is a deficient number, since it is larger than the sum of its proper divisors (25060664).

28564936 is a wasteful number, since it uses less digits than its factorization.

28564936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428 (or 4424 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 28564936 is about 5344.6174792963. The cubic root of 28564936 is about 305.6875504115.

The spelling of 28564936 in words is "twenty-eight million, five hundred sixty-four thousand, nine hundred thirty-six".