28686185068 has 24 divisors (see below), whose sum is σ = 50561406000. Its totient is φ = 14240159808.

The previous prime is 28686185057. The next prime is 28686185117. The reversal of 28686185068 is 86058168682.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1413771 + ... + 1433917.

It is an arithmetic number, because the mean of its divisors is an integer number (2106725250).

Almost surely, 2^28686185068 is an apocalyptic number.

It is an amenable number.

28686185068 is a deficient number, since it is larger than the sum of its proper divisors (21875220932).

28686185068 is a wasteful number, since it uses less digits than its factorization.

28686185068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22689 (or 22687 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 58.

The spelling of 28686185068 in words is "twenty-eight billion, six hundred eighty-six million, one hundred eighty-five thousand, sixty-eight".