28232912585 has 16 divisors (see below), whose sum is σ = 34443976896. Its totient is φ = 22211162688.

The previous prime is 28232912579. The next prime is 28232912629. The reversal of 28232912585 is 58521923282.

It is a cyclic number.

It is not a de Polignac number, because 28232912585 - 2²² = 28228718281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124859 + ... + 268431.

It is an arithmetic number, because the mean of its divisors is an integer number (2152748556).

Almost surely, 2^28232912585 is an apocalyptic number.

It is an amenable number.

28232912585 is a deficient number, since it is larger than the sum of its proper divisors (6211064311).

28232912585 is a wasteful number, since it uses less digits than its factorization.

28232912585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144232.

The product of its digits is 691200, while the sum is 47.

The spelling of 28232912585 in words is "twenty-eight billion, two hundred thirty-two million, nine hundred twelve thousand, five hundred eighty-five".