28576863784 has 96 divisors (see below), whose sum is σ = 63627595200. Its totient is φ = 11786342400.

The previous prime is 28576863767. The next prime is 28576863793. The reversal of 28576863784 is 48736867582.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17848584 + ... + 17850184.

It is an arithmetic number, because the mean of its divisors is an integer number (662787450).

Almost surely, 2^28576863784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28576863784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31813797600).

28576863784 is an abundant number, since it is smaller than the sum of its proper divisors (35050731416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28576863784 is a wasteful number, since it uses less digits than its factorization.

28576863784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051 (or 2018 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 64.

The spelling of 28576863784 in words is "twenty-eight billion, five hundred seventy-six million, eight hundred sixty-three thousand, seven hundred eighty-four".