28283874687 has 6 divisors (see below), whose sum is σ = 40854485672. Its totient is φ = 18855916452.

The previous prime is 28283874683. The next prime is 28283874733. The reversal of 28283874687 is 78647838282.

It is not a de Polignac number, because 28283874687 - 2² = 28283874683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28283874683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1571326363 + ... + 1571326380.

Almost surely, 2^28283874687 is an apocalyptic number.

28283874687 is a deficient number, since it is larger than the sum of its proper divisors (12570610985).

28283874687 is a wasteful number, since it uses less digits than its factorization.

28283874687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142652749 (or 3142652746 counting only the distinct ones).

The product of its digits is 57802752, while the sum is 63.

The spelling of 28283874687 in words is "twenty-eight billion, two hundred eighty-three million, eight hundred seventy-four thousand, six hundred eighty-seven".