28013628584 has 16 divisors (see below), whose sum is σ = 52535048820. Its totient is φ = 14004282240.

The previous prime is 28013628529. The next prime is 28013628611. The reversal of 28013628584 is 48582631082.

It can be written as a sum of positive squares in 2 ways, for example, as 25853424100 + 2160204484 = 160790^2 + 46478^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269069 + ... + 358364.

Almost surely, 2^28013628584 is an apocalyptic number.

It is an amenable number.

28013628584 is a deficient number, since it is larger than the sum of its proper divisors (24521420236).

28013628584 is a wasteful number, since it uses less digits than its factorization.

28013628584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633020 (or 633016 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 28013628584 in words is "twenty-eight billion, thirteen million, six hundred twenty-eight thousand, five hundred eighty-four".