28289573284 has 12 divisors (see below), whose sum is σ = 56579146624. Its totient is φ = 12124102824.

The previous prime is 28289573269. The next prime is 28289573293. The reversal of 28289573284 is 48237598282.

28289573284 is an admirable number.

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, 505170924 + ... + 505170979.

Almost surely, 2^28289573284 is an apocalyptic number.

It is an amenable number.

28289573284 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28289573284 is a wasteful number, since it uses less digits than its factorization.

28289573284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010341914 (or 1010341912 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 58.

The spelling of 28289573284 in words is "twenty-eight billion, two hundred eighty-nine million, five hundred seventy-three thousand, two hundred eighty-four".