28760616728 has 32 divisors (see below), whose sum is σ = 57202815600. Its totient is φ = 13509629952.

The previous prime is 28760616719. The next prime is 28760616751. The reversal of 28760616728 is 82761606782.

It is a self number, because there is not a number n which added to its sum of digits gives 28760616728.

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, 118913 + ... + 267696.

Almost surely, 2^28760616728 is an apocalyptic number.

It is an amenable number.

28760616728 is a deficient number, since it is larger than the sum of its proper divisors (28442198872).

28760616728 is a wasteful number, since it uses less digits than its factorization.

28760616728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387179 (or 387175 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 28760616728 in words is "twenty-eight billion, seven hundred sixty million, six hundred sixteen thousand, seven hundred twenty-eight".