28675899 has 24 divisors (see below), whose sum is σ = 48868352. Its totient is φ = 15856560.

The previous prime is 28675891. The next prime is 28675903. The reversal of 28675899 is 99857682.

It is a happy number.

It is not a de Polignac number, because 28675899 - 2³ = 28675891 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 (28675891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5389 + ... + 9294.

Almost surely, 2^28675899 is an apocalyptic number.

28675899 is a deficient number, since it is larger than the sum of its proper divisors (20192453).

28675899 is a wasteful number, since it uses less digits than its factorization.

28675899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14727 (or 14724 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 28675899 is about 5354.9882352812. The cubic root of 28675899 is about 306.0828623474.

The spelling of 28675899 in words is "twenty-eight million, six hundred seventy-five thousand, eight hundred ninety-nine".