28063984894 has 16 divisors (see below), whose sum is σ = 46011046896. Its totient is φ = 12731867200.

The previous prime is 28063984889. The next prime is 28063984933. The reversal of 28063984894 is 49848936082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1212757 + ... + 1235680.

It is an arithmetic number, because the mean of its divisors is an integer number (2875690431).

Almost surely, 2^28063984894 is an apocalyptic number.

28063984894 is a deficient number, since it is larger than the sum of its proper divisors (17947062002).

28063984894 is a wasteful number, since it uses less digits than its factorization.

28063984894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448971.

The product of its (nonzero) digits is 23887872, while the sum is 61.

The spelling of 28063984894 in words is "twenty-eight billion, sixty-three million, nine hundred eighty-four thousand, eight hundred ninety-four".