28619368688 has 20 divisors (see below), whose sum is σ = 55462169688. Its totient is φ = 14306550720.

The previous prime is 28619368643. The next prime is 28619368691. The reversal of 28619368688 is 88686391682.

It is a congruent number.

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, 119606 + ... + 267477.

Almost surely, 2^28619368688 is an apocalyptic number.

It is an amenable number.

28619368688 is a deficient number, since it is larger than the sum of its proper divisors (26842801000).

28619368688 is a wasteful number, since it uses less digits than its factorization.

28619368688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391712 (or 391706 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 65.

The spelling of 28619368688 in words is "twenty-eight billion, six hundred nineteen million, three hundred sixty-eight thousand, six hundred eighty-eight".