28338565686 has 16 divisors (see below), whose sum is σ = 56681117184. Its totient is φ = 9445524264.

The previous prime is 28338565657. The next prime is 28338565691. The reversal of 28338565686 is 68656583382.

It is a Curzon number.

It is a congruent number.

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, 69310 + ... + 247953.

It is an arithmetic number, because the mean of its divisors is an integer number (3542569824).

Almost surely, 2^28338565686 is an apocalyptic number.

28338565686 is an abundant number, since it is smaller than the sum of its proper divisors (28342551498).

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

28338565686 is a wasteful number, since it uses less digits than its factorization.

28338565686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332155.

The product of its digits is 49766400, while the sum is 60.

The spelling of 28338565686 in words is "twenty-eight billion, three hundred thirty-eight million, five hundred sixty-five thousand, six hundred eighty-six".