6789328728 has 128 divisors (see below), whose sum is σ = 21043653120. Its totient is φ = 1777443840.

The previous prime is 6789328657. The next prime is 6789328759. The reversal of 6789328728 is 8278239876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287863 + ... + 310553.

It is an arithmetic number, because the mean of its divisors is an integer number (164403540).

Almost surely, 2^6789328728 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 6789328728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10521826560).

6789328728 is an abundant number, since it is smaller than the sum of its proper divisors (14254324392).

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

6789328728 is a wasteful number, since it uses less digits than its factorization.

6789328728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22857 (or 22853 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 60.

The square root of 6789328728 is about 82397.3830166954. The cubic root of 6789328728 is about 1893.5449205058.

The spelling of 6789328728 in words is "six billion, seven hundred eighty-nine million, three hundred twenty-eight thousand, seven hundred twenty-eight".