28055864828 has 6 divisors (see below), whose sum is σ = 49097763456. Its totient is φ = 14027932412.

The previous prime is 28055864741. The next prime is 28055864861. The reversal of 28055864828 is 82846855082.

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, 3506983100 + ... + 3506983107.

It is an arithmetic number, because the mean of its divisors is an integer number (8182960576).

Almost surely, 2^28055864828 is an apocalyptic number.

It is an amenable number.

28055864828 is a deficient number, since it is larger than the sum of its proper divisors (21041898628).

28055864828 is a wasteful number, since it uses less digits than its factorization.

28055864828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7013966211 (or 7013966209 counting only the distinct ones).

The product of its (nonzero) digits is 9830400, while the sum is 56.

The spelling of 28055864828 in words is "twenty-eight billion, fifty-five million, eight hundred sixty-four thousand, eight hundred twenty-eight".