28182813265 has 12 divisors (see below), whose sum is σ = 35925774876. Its totient is φ = 21219999488.

The previous prime is 28182813233. The next prime is 28182813271. The reversal of 28182813265 is 56231828182.

It can be written as a sum of positive squares in 6 ways, for example, as 461562256 + 27721251009 = 21484^2 + 166497^2 .

It is not a de Polignac number, because 28182813265 - 2⁵ = 28182813233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9750394 + ... + 9753283.

It is an arithmetic number, because the mean of its divisors is an integer number (2993814573).

Almost surely, 2^28182813265 is an apocalyptic number.

It is an amenable number.

28182813265 is a deficient number, since it is larger than the sum of its proper divisors (7742961611).

28182813265 is a wasteful number, since it uses less digits than its factorization.

28182813265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19503716 (or 19503699 counting only the distinct ones).

The product of its digits is 368640, while the sum is 46.

The spelling of 28182813265 in words is "twenty-eight billion, one hundred eighty-two million, eight hundred thirteen thousand, two hundred sixty-five".