28804856 has 8 divisors (see below), whose sum is σ = 54009120. Its totient is φ = 14402424.

The previous prime is 28804813. The next prime is 28804873. The reversal of 28804856 is 65840882.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1800296 + ... + 1800311.

It is an arithmetic number, because the mean of its divisors is an integer number (6751140).

Almost surely, 2^28804856 is an apocalyptic number.

It is an amenable number.

28804856 is a deficient number, since it is larger than the sum of its proper divisors (25204264).

28804856 is a wasteful number, since it uses less digits than its factorization.

28804856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600613 (or 3600609 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 28804856 is about 5367.0155580173. The cubic root of 28804856 is about 306.5409997606.

The spelling of 28804856 in words is "twenty-eight million, eight hundred four thousand, eight hundred fifty-six".