28339609875 has 32 divisors (see below), whose sum is σ = 49931069760. Its totient is φ = 14225369600.

The previous prime is 28339609861. The next prime is 28339609933. The reversal of 28339609875 is 57890693382.

It is not a de Polignac number, because 28339609875 - 2⁶ = 28339609811 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2216340 + ... + 2229089.

It is an arithmetic number, because the mean of its divisors is an integer number (1560345930).

Almost surely, 2^28339609875 is an apocalyptic number.

28339609875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28339609875 is a deficient number, since it is larger than the sum of its proper divisors (21591459885).

28339609875 is a wasteful number, since it uses less digits than its factorization.

28339609875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445464 (or 4445454 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 60.

The spelling of 28339609875 in words is "twenty-eight billion, three hundred thirty-nine million, six hundred nine thousand, eight hundred seventy-five".