28935887568 has 80 divisors (see below), whose sum is σ = 88185593856. Its totient is φ = 8000703360.

The previous prime is 28935887557. The next prime is 28935887597. The reversal of 28935887568 is 86578853982.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1378596 + ... + 1399427.

Almost surely, 2^28935887568 is an apocalyptic number.

28935887568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28935887568 is an abundant number, since it is smaller than the sum of its proper divisors (59249706288).

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

28935887568 is a wasteful number, since it uses less digits than its factorization.

28935887568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778072 (or 2778066 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 69.

The spelling of 28935887568 in words is "twenty-eight billion, nine hundred thirty-five million, eight hundred eighty-seven thousand, five hundred sixty-eight".