28559282216 has 16 divisors (see below), whose sum is σ = 53563513140. Its totient is φ = 14275678720.

The previous prime is 28559282207. The next prime is 28559282221. The reversal of 28559282216 is 61228295582.

It can be written as a sum of positive squares in 2 ways, for example, as 28523832100 + 35450116 = 168890^2 + 5954^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464555 + ... + 522426.

Almost surely, 2^28559282216 is an apocalyptic number.

It is an amenable number.

28559282216 is a deficient number, since it is larger than the sum of its proper divisors (25004230924).

28559282216 is a wasteful number, since it uses less digits than its factorization.

28559282216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990604 (or 990600 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 50.

The spelling of 28559282216 in words is "twenty-eight billion, five hundred fifty-nine million, two hundred eighty-two thousand, two hundred sixteen".