28320788614 has 32 divisors (see below), whose sum is σ = 45339657120. Its totient is φ = 13221315072.

The previous prime is 28320788567. The next prime is 28320788623. The reversal of 28320788614 is 41688702382.

It is a congruent 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, 2197012 + ... + 2209864.

It is an arithmetic number, because the mean of its divisors is an integer number (1416864285).

Almost surely, 2^28320788614 is an apocalyptic number.

28320788614 is a deficient number, since it is larger than the sum of its proper divisors (17018868506).

28320788614 is a wasteful number, since it uses less digits than its factorization.

28320788614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13384.

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 28320788614 in words is "twenty-eight billion, three hundred twenty million, seven hundred eighty-eight thousand, six hundred fourteen".