6728112864 has 72 divisors (see below), whose sum is σ = 20872450872. Its totient is φ = 2038821120.

The previous prime is 6728112847. The next prime is 6728112871. The reversal of 6728112864 is 4682118276.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1058719 + ... + 1065054.

It is an arithmetic number, because the mean of its divisors is an integer number (289895151).

Almost surely, 2^6728112864 is an apocalyptic number.

It is an amenable number.

6728112864 is an abundant number, since it is smaller than the sum of its proper divisors (14144338008).

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

6728112864 is a wasteful number, since it uses less digits than its factorization.

6728112864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123800 (or 2123789 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 6728112864 is about 82025.0746052693. The cubic root of 6728112864 is about 1887.8366916823.

The spelling of 6728112864 in words is "six billion, seven hundred twenty-eight million, one hundred twelve thousand, eight hundred sixty-four".