28866648840468 has 36 divisors (see below), whose sum is σ = 70411340696928. Its totient is φ = 9203859048560.

The previous prime is 28866648840413. The next prime is 28866648840473. The reversal of 28866648840468 is 86404884666882.

It is a junction number, because it is equal to n+sod(n) for n = 28866648840393 and 28866648840402.

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 11 ways as a sum of consecutive naturals, for example, 2273674248 + ... + 2273686943.

Almost surely, 2^{28866648840468} is an apocalyptic number.

It is an amenable number.

28866648840468 is an abundant number, since it is smaller than the sum of its proper divisors (41544691856460).

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

28866648840468 is a wasteful number, since it uses less digits than its factorization.

28866648840468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547361244 (or 4547361219 counting only the distinct ones).

The product of its (nonzero) digits is 5435817984, while the sum is 78.

The spelling of 28866648840468 in words is "twenty-eight trillion, eight hundred sixty-six billion, six hundred forty-eight million, eight hundred forty thousand, four hundred sixty-eight".