28576975 has 24 divisors (see below), whose sum is σ = 41176928. Its totient is φ = 19267200.

The previous prime is 28576973. The next prime is 28576993. The reversal of 28576975 is 57967582.

It is not a de Polignac number, because 28576975 - 2¹ = 28576973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28576973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9337 + ... + 12013.

Almost surely, 2^28576975 is an apocalyptic number.

28576975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28576975 is a deficient number, since it is larger than the sum of its proper divisors (12599953).

28576975 is a wasteful number, since it uses less digits than its factorization.

28576975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755 (or 2750 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 49.

The square root of 28576975 is about 5345.7436339578. The cubic root of 28576975 is about 305.7304894834.

The spelling of 28576975 in words is "twenty-eight million, five hundred seventy-six thousand, nine hundred seventy-five".