28133347056 has 40 divisors (see below), whose sum is σ = 76952980944. Its totient is φ = 8826147840.

The previous prime is 28133347037. The next prime is 28133347097. The reversal of 28133347056 is 65074333182.

It is a junction number, because it is equal to n+sod(n) for n = 28133346999 and 28133347017.

It is a congruent number.

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, 17237755 + ... + 17239386.

Almost surely, 2^28133347056 is an apocalyptic number.

It is an amenable number.

28133347056 is an abundant number, since it is smaller than the sum of its proper divisors (48819633888).

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

28133347056 is a wasteful number, since it uses less digits than its factorization.

28133347056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34477169 (or 34477163 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 28133347056 in words is "twenty-eight billion, one hundred thirty-three million, three hundred forty-seven thousand, fifty-six".