28814578684 has 12 divisors (see below), whose sum is σ = 50426707408. Its totient is φ = 14406948000.

The previous prime is 28814578619. The next prime is 28814578693. The reversal of 28814578684 is 48687541882.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258784 + ... + 352984.

Almost surely, 2^28814578684 is an apocalyptic number.

It is an amenable number.

28814578684 is a deficient number, since it is larger than the sum of its proper divisors (21612128724).

28814578684 is a wasteful number, since it uses less digits than its factorization.

28814578684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170676 (or 170674 counting only the distinct ones).

The product of its digits is 27525120, while the sum is 61.

The spelling of 28814578684 in words is "twenty-eight billion, eight hundred fourteen million, five hundred seventy-eight thousand, six hundred eighty-four".