28056107984 has 40 divisors (see below), whose sum is σ = 55469242152. Its totient is φ = 13742277120.

The previous prime is 28056107957. The next prime is 28056108001. The reversal of 28056107984 is 48970165082.

It can be written as a sum of positive squares in 4 ways, for example, as 19257667984 + 8798440000 = 138772^2 + 93800^2 .

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, 535502 + ... + 585554.

Almost surely, 2^28056107984 is an apocalyptic number.

It is an amenable number.

28056107984 is a deficient number, since it is larger than the sum of its proper divisors (27413134168).

28056107984 is a wasteful number, since it uses less digits than its factorization.

28056107984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50775 (or 50769 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 28056107984 in words is "twenty-eight billion, fifty-six million, one hundred seven thousand, nine hundred eighty-four".