28643435696 has 20 divisors (see below), whose sum is σ = 55527733200. Its totient is φ = 14313698112.

The previous prime is 28643435683. The next prime is 28643435713. The reversal of 28643435696 is 69653434682.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471716 + ... + 528963.

It is an arithmetic number, because the mean of its divisors is an integer number (2776386660).

Almost surely, 2^28643435696 is an apocalyptic number.

It is an amenable number.

28643435696 is a deficient number, since it is larger than the sum of its proper divisors (26884297504).

28643435696 is a wasteful number, since it uses less digits than its factorization.

28643435696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002476 (or 1002470 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 56.

The spelling of 28643435696 in words is "twenty-eight billion, six hundred forty-three million, four hundred thirty-five thousand, six hundred ninety-six".