28592780836 has 27 divisors (see below), whose sum is σ = 50935376401. Its totient is φ = 14044271264.

The previous prime is 28592780803. The next prime is 28592780851. The reversal of 28592780836 is 63808729582.

The square root of 28592780836 is 169094.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 23712920100 + 4879860736 = 153990^2 + 69856^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19952376 + ... + 19953808.

Almost surely, 2^28592780836 is an apocalyptic number.

28592780836 is the 169094-th square number.

It is an amenable number.

28592780836 is a deficient number, since it is larger than the sum of its proper divisors (22342595565).

28592780836 is an frugal number, since it uses more digits than its factorization.

28592780836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 1494 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 28592780836 in words is "twenty-eight billion, five hundred ninety-two million, seven hundred eighty thousand, eight hundred thirty-six".