28696564 has 24 divisors (see below), whose sum is σ = 54401760. Its totient is φ = 13166304.

The previous prime is 28696559. The next prime is 28696583. The reversal of 28696564 is 46569682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7767 + ... + 10849.

It is an arithmetic number, because the mean of its divisors is an integer number (2266740).

Almost surely, 2^28696564 is an apocalyptic number.

It is an amenable number.

28696564 is a deficient number, since it is larger than the sum of its proper divisors (25705196).

28696564 is a wasteful number, since it uses less digits than its factorization.

28696564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279 (or 3277 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The square root of 28696564 is about 5356.9173971604. The cubic root of 28696564 is about 306.1563698779.

The spelling of 28696564 in words is "twenty-eight million, six hundred ninety-six thousand, five hundred sixty-four".