28368247585 has 8 divisors (see below), whose sum is σ = 34049520936. Its totient is φ = 22689515520.

The previous prime is 28368247553. The next prime is 28368247601. The reversal of 28368247585 is 58574286382.

It can be written as a sum of positive squares in 4 ways, for example, as 4534136896 + 23834110689 = 67336^2 + 154383^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28368247585 - 2⁵ = 28368247553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610674 + ... + 655483.

It is an arithmetic number, because the mean of its divisors is an integer number (4256190117).

Almost surely, 2^28368247585 is an apocalyptic number.

It is an amenable number.

28368247585 is a deficient number, since it is larger than the sum of its proper divisors (5681273351).

28368247585 is a wasteful number, since it uses less digits than its factorization.

28368247585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270643.

The product of its digits is 25804800, while the sum is 58.

The spelling of 28368247585 in words is "twenty-eight billion, three hundred sixty-eight million, two hundred forty-seven thousand, five hundred eighty-five".