28345287585 has 8 divisors (see below), whose sum is σ = 45352460160. Its totient is φ = 15117486704.

The previous prime is 28345287563. The next prime is 28345287679. The reversal of 28345287585 is 58578254382.

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

It is a cyclic number.

It is not a de Polignac number, because 28345287585 - 2⁹ = 28345287073 is a prime.

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, 944842905 + ... + 944842934.

It is an arithmetic number, because the mean of its divisors is an integer number (5669057520).

Almost surely, 2^28345287585 is an apocalyptic number.

It is an amenable number.

28345287585 is a deficient number, since it is larger than the sum of its proper divisors (17007172575).

28345287585 is a wasteful number, since it uses less digits than its factorization.

28345287585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889685847.

The product of its digits is 21504000, while the sum is 57.

The spelling of 28345287585 in words is "twenty-eight billion, three hundred forty-five million, two hundred eighty-seven thousand, five hundred eighty-five".