28133683856 has 10 divisors (see below), whose sum is σ = 54509012502. Its totient is φ = 14066841920.

The previous prime is 28133683829. The next prime is 28133683867. The reversal of 28133683856 is 65838633182.

It can be written as a sum of positive squares in only one way, i.e., 27748896400 + 384787456 = 166580^2 + 19616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28133683798 and 28133683807.

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 as a sum of consecutive naturals, namely, 879177605 + ... + 879177636.

Almost surely, 2^28133683856 is an apocalyptic number.

It is an amenable number.

28133683856 is a deficient number, since it is larger than the sum of its proper divisors (26375328646).

28133683856 is a wasteful number, since it uses less digits than its factorization.

28133683856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758355249 (or 1758355243 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 53.

The spelling of 28133683856 in words is "twenty-eight billion, one hundred thirty-three million, six hundred eighty-three thousand, eight hundred fifty-six".