28085926804 has 18 divisors (see below), whose sum is σ = 53222001630. Its totient is φ = 12962735136.

The previous prime is 28085926733. The next prime is 28085926823. The reversal of 28085926804 is 40862958082.

It can be written as a sum of positive squares in 3 ways, for example, as 1536483204 + 26549443600 = 39198^2 + 162940^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20772939 + ... + 20774290.

Almost surely, 2^28085926804 is an apocalyptic number.

It is an amenable number.

28085926804 is a deficient number, since it is larger than the sum of its proper divisors (25136074826).

28085926804 is a wasteful number, since it uses less digits than its factorization.

28085926804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41547259 (or 41547244 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 28085926804 in words is "twenty-eight billion, eighty-five million, nine hundred twenty-six thousand, eight hundred four".