28532764347728 has 20 divisors (see below), whose sum is σ = 55309639132500. Its totient is φ = 14259309087744.

The previous prime is 28532764347679. The next prime is 28532764347757. The reversal of 28532764347728 is 82774346723582.

It can be written as a sum of positive squares in 2 ways, for example, as 10361368712464 + 18171395635264 = 3218908^2 + 4262792^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442034603 + ... + 442099146.

It is an arithmetic number, because the mean of its divisors is an integer number (2765481956625).

Almost surely, 2^{28532764347728} is an apocalyptic number.

It is an amenable number.

28532764347728 is a deficient number, since it is larger than the sum of its proper divisors (26776874784772).

28532764347728 is a wasteful number, since it uses less digits than its factorization.

28532764347728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884135774 (or 884135768 counting only the distinct ones).

The product of its digits is 758661120, while the sum is 68.

The spelling of 28532764347728 in words is "twenty-eight trillion, five hundred thirty-two billion, seven hundred sixty-four million, three hundred forty-seven thousand, seven hundred twenty-eight".