28082322585 has 12 divisors (see below), whose sum is σ = 48676025892. Its totient is φ = 14977238688.

The previous prime is 28082322529. The next prime is 28082322589. The reversal of 28082322585 is 58522328082.

28082322585 is a `hidden beast` number, since 28 + 0 + 8 + 23 + 22 + 585 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16849078416 + 11233244169 = 129804^2 + 105987^2 .

It is not a de Polignac number, because 28082322585 - 2¹⁴ = 28082306201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 624051613 = 28082322585 / (2 + 8 + 0 + 8 + 2 + 3 + 2 + 2 + 5 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 28082322585.

It is not an unprimeable number, because it can be changed into a prime (28082322589) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 312025762 + ... + 312025851.

It is an arithmetic number, because the mean of its divisors is an integer number (4056335491).

Almost surely, 2^28082322585 is an apocalyptic number.

It is an amenable number.

28082322585 is a deficient number, since it is larger than the sum of its proper divisors (20593703307).

28082322585 is a wasteful number, since it uses less digits than its factorization.

28082322585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624051624 (or 624051621 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

The spelling of 28082322585 in words is "twenty-eight billion, eighty-two million, three hundred twenty-two thousand, five hundred eighty-five".