28188678604 has 6 divisors (see below), whose sum is σ = 49330187564. Its totient is φ = 14094339300.

The previous prime is 28188678599. The next prime is 28188678689. The reversal of 28188678604 is 40687688182.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3523584822 + ... + 3523584829.

Almost surely, 2^28188678604 is an apocalyptic number.

It is an amenable number.

28188678604 is a deficient number, since it is larger than the sum of its proper divisors (21141508960).

28188678604 is a wasteful number, since it uses less digits than its factorization.

28188678604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7047169655 (or 7047169653 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 58.

The spelling of 28188678604 in words is "twenty-eight billion, one hundred eighty-eight million, six hundred seventy-eight thousand, six hundred four".