28528567882 has 24 divisors (see below), whose sum is σ = 43757858340. Its totient is φ = 13949569920.

The previous prime is 28528567843. The next prime is 28528567931. The reversal of 28528567882 is 28876582582.

It can be written as a sum of positive squares in 2 ways, for example, as 20240468361 + 8288099521 = 142269^2 + 91039^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28528567882.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9139282 + ... + 9142402.

Almost surely, 2^28528567882 is an apocalyptic number.

28528567882 is a deficient number, since it is larger than the sum of its proper divisors (15229290458).

28528567882 is a wasteful number, since it uses less digits than its factorization.

28528567882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286 (or 5239 counting only the distinct ones).

The product of its digits is 34406400, while the sum is 61.

The spelling of 28528567882 in words is "twenty-eight billion, five hundred twenty-eight million, five hundred sixty-seven thousand, eight hundred eighty-two".