28866978975056 has 40 divisors (see below), whose sum is σ = 59500420818624. Its totient is φ = 13520079336960.

The previous prime is 28866978975011. The next prime is 28866978975061. The reversal of 28866978975056 is 65057987966882.

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, 251432180 + ... + 251546963.

Almost surely, 2^{28866978975056} is an apocalyptic number.

It is an amenable number.

28866978975056 is an abundant number, since it is smaller than the sum of its proper divisors (30633441843568).

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

28866978975056 is a wasteful number, since it uses less digits than its factorization.

28866978975056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502979379 (or 502979373 counting only the distinct ones).

The product of its (nonzero) digits is 21946982400, while the sum is 86.

The spelling of 28866978975056 in words is "twenty-eight trillion, eight hundred sixty-six billion, nine hundred seventy-eight million, nine hundred seventy-five thousand, fifty-six".