28499422568 has 32 divisors (see below), whose sum is σ = 54892744200. Its totient is φ = 13861527552.

The previous prime is 28499422537. The next prime is 28499422573. The reversal of 28499422568 is 86522499482.

It can be written as a sum of positive squares in 4 ways, for example, as 23630453284 + 4868969284 = 153722^2 + 69778^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1937096 + ... + 1951752.

Almost surely, 2^28499422568 is an apocalyptic number.

It is an amenable number.

28499422568 is a deficient number, since it is larger than the sum of its proper divisors (26393321632).

28499422568 is a wasteful number, since it uses less digits than its factorization.

28499422568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21269 (or 21265 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 59.

The spelling of 28499422568 in words is "twenty-eight billion, four hundred ninety-nine million, four hundred twenty-two thousand, five hundred sixty-eight".