28065207570 has 32 divisors (see below), whose sum is σ = 68460707520. Its totient is φ = 7361365440.

The previous prime is 28065207563. The next prime is 28065207601. The reversal of 28065207570 is 7570256082.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7666260 + ... + 7669919.

It is an arithmetic number, because the mean of its divisors is an integer number (2139397110).

Almost surely, 2^28065207570 is an apocalyptic number.

28065207570 is an abundant number, since it is smaller than the sum of its proper divisors (40395499950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28065207570 is a wasteful number, since it uses less digits than its factorization.

28065207570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15336250.

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 28065207570 in words is "twenty-eight billion, sixty-five million, two hundred seven thousand, five hundred seventy".