28603830728 has 32 divisors (see below), whose sum is σ = 59934863520. Its totient is φ = 12684624000.

The previous prime is 28603830713. The next prime is 28603830737. The reversal of 28603830728 is 82703830682.

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, 3960338 + ... + 3967553.

It is an arithmetic number, because the mean of its divisors is an integer number (1872964485).

Almost surely, 2^28603830728 is an apocalyptic number.

It is an amenable number.

28603830728 is an abundant number, since it is smaller than the sum of its proper divisors (31331032792).

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

28603830728 is a wasteful number, since it uses less digits than its factorization.

28603830728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7927949 (or 7927945 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 28603830728 in words is "twenty-eight billion, six hundred three million, eight hundred thirty thousand, seven hundred twenty-eight".