28569271968 has 192 divisors, whose sum is σ = 84701635200. Its totient is φ = 9367050240.

The previous prime is 28569271937. The next prime is 28569271993. The reversal of 28569271968 is 86917296582.

28569271968 is a `hidden beast` number, since 2 + 8 + 569 + 2 + 7 + 1 + 9 + 68 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19289788 + ... + 19291268.

It is an arithmetic number, because the mean of its divisors is an integer number (441154350).

Almost surely, 2^28569271968 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 28569271968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42350817600).

28569271968 is an abundant number, since it is smaller than the sum of its proper divisors (56132363232).

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

28569271968 is a wasteful number, since it uses less digits than its factorization.

28569271968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852 (or 1838 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The spelling of 28569271968 in words is "twenty-eight billion, five hundred sixty-nine million, two hundred seventy-one thousand, nine hundred sixty-eight".