28589268568 has 32 divisors (see below), whose sum is σ = 62101942560. Its totient is φ = 12084698880.

The previous prime is 28589268557. The next prime is 28589268619. The reversal of 28589268568 is 86586298582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3492643 + ... + 3500818.

It is an arithmetic number, because the mean of its divisors is an integer number (1940685705).

Almost surely, 2^28589268568 is an apocalyptic number.

28589268568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28589268568 is an abundant number, since it is smaller than the sum of its proper divisors (33512673992).

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

28589268568 is a wasteful number, since it uses less digits than its factorization.

28589268568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6993547 (or 6993543 counting only the distinct ones).

The product of its digits is 132710400, while the sum is 67.

The spelling of 28589268568 in words is "twenty-eight billion, five hundred eighty-nine million, two hundred sixty-eight thousand, five hundred sixty-eight".