28085926806 has 96 divisors (see below), whose sum is σ = 73271727360. Its totient is φ = 7595425728.

The previous prime is 28085926733. The next prime is 28085926823. The reversal of 28085926806 is 60862958082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3052545 + ... + 3061731.

It is an arithmetic number, because the mean of its divisors is an integer number (763247160).

Almost surely, 2^28085926806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28085926806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36635863680).

28085926806 is an abundant number, since it is smaller than the sum of its proper divisors (45185800554).

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

28085926806 is a wasteful number, since it uses less digits than its factorization.

28085926806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10498 (or 10495 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 28085926806 in words is "twenty-eight billion, eighty-five million, nine hundred twenty-six thousand, eight hundred six".