28285087579 has 4 divisors (see below), whose sum is σ = 32325814384. Its totient is φ = 24244360776.

The previous prime is 28285087529. The next prime is 28285087619. The reversal of 28285087579 is 97578058282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28285087579 - 2¹¹ = 28285085531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28285087529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020363392 + ... + 2020363405.

It is an arithmetic number, because the mean of its divisors is an integer number (8081453596).

Almost surely, 2^28285087579 is an apocalyptic number.

28285087579 is a deficient number, since it is larger than the sum of its proper divisors (4040726805).

28285087579 is an equidigital number, since it uses as much as digits as its factorization.

28285087579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040726804.

The product of its (nonzero) digits is 22579200, while the sum is 61.

The spelling of 28285087579 in words is "twenty-eight billion, two hundred eighty-five million, eighty-seven thousand, five hundred seventy-nine".