28576228 has 12 divisors (see below), whose sum is σ = 52640560. Its totient is φ = 13536072.

The previous prime is 28576193. The next prime is 28576241. The reversal of 28576228 is 82267582.

It is an unprimeable number.

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, 187926 + ... + 188077.

Almost surely, 2^28576228 is an apocalyptic number.

It is an amenable number.

28576228 is a deficient number, since it is larger than the sum of its proper divisors (24064332).

28576228 is a wasteful number, since it uses less digits than its factorization.

28576228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376026 (or 376024 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 28576228 is about 5345.6737648308. The cubic root of 28576228 is about 305.7278255361.

The spelling of 28576228 in words is "twenty-eight million, five hundred seventy-six thousand, two hundred twenty-eight".