28566439868376 has 288 divisors, whose sum is σ = 81988659567360. Its totient is φ = 8967606291072.

The previous prime is 28566439868327. The next prime is 28566439868381. The reversal of 28566439868376 is 67386893466582.

28566439868376 is a `hidden beast` number, since 2 + 8 + 5 + 66 + 43 + 98 + 68 + 376 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28566439868295 and 28566439868304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5465166675 + ... + 5465171901.

It is an arithmetic number, because the mean of its divisors is an integer number (284682845720).

Almost surely, 2^{28566439868376} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28566439868376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40994329783680).

28566439868376 is an abundant number, since it is smaller than the sum of its proper divisors (53422219698984).

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

28566439868376 is a wasteful number, since it uses less digits than its factorization.

28566439868376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723 (or 5537 counting only the distinct ones).

The product of its digits is 15049359360, while the sum is 81.

The spelling of 28566439868376 in words is "twenty-eight trillion, five hundred sixty-six billion, four hundred thirty-nine million, eight hundred sixty-eight thousand, three hundred seventy-six".