28928959688 has 32 divisors (see below), whose sum is σ = 58425960960. Its totient is φ = 13389277440.

The previous prime is 28928959681. The next prime is 28928959691. The reversal of 28928959688 is 88695982982.

It is not an unprimeable number, because it can be changed into a prime (28928959681) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2530145 + ... + 2541552.

It is an arithmetic number, because the mean of its divisors is an integer number (1825811280).

Almost surely, 2^28928959688 is an apocalyptic number.

It is an amenable number.

28928959688 is an abundant number, since it is smaller than the sum of its proper divisors (29497001272).

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

28928959688 is a wasteful number, since it uses less digits than its factorization.

28928959688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071757 (or 5071753 counting only the distinct ones).

The product of its digits is 358318080, while the sum is 74.

The spelling of 28928959688 in words is "twenty-eight billion, nine hundred twenty-eight million, nine hundred fifty-nine thousand, six hundred eighty-eight".