28576664 has 16 divisors (see below), whose sum is σ = 53703000. Its totient is φ = 14255872.

The previous prime is 28576663. The next prime is 28576721. The reversal of 28576664 is 46667582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28576663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89 + ... + 7560.

Almost surely, 2^28576664 is an apocalyptic number.

It is an amenable number.

28576664 is a deficient number, since it is larger than the sum of its proper divisors (25126336).

28576664 is a wasteful number, since it uses less digits than its factorization.

28576664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8122 (or 8118 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The square root of 28576664 is about 5345.7145453157. The cubic root of 28576664 is about 305.7293804026.

The spelling of 28576664 in words is "twenty-eight million, five hundred seventy-six thousand, six hundred sixty-four".