28573868 has 6 divisors (see below), whose sum is σ = 50004276. Its totient is φ = 14286932.

The previous prime is 28573859. The next prime is 28573873. The reversal of 28573868 is 86837582.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3571730 + ... + 3571737.

It is an arithmetic number, because the mean of its divisors is an integer number (8334046).

Almost surely, 2^28573868 is an apocalyptic number.

It is an amenable number.

28573868 is a deficient number, since it is larger than the sum of its proper divisors (21430408).

28573868 is a wasteful number, since it uses less digits than its factorization.

28573868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7143471 (or 7143469 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 28573868 is about 5345.4530210264. The cubic root of 28573868 is about 305.7194090120.

The spelling of 28573868 in words is "twenty-eight million, five hundred seventy-three thousand, eight hundred sixty-eight".