6728743908 has 72 divisors (see below), whose sum is σ = 17969777280. Its totient is φ = 2119481280.

The previous prime is 6728743907. The next prime is 6728743919. The reversal of 6728743908 is 8093478276.

It is a super-2 number, since 2×6728743908² = 90551989158894224928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6728743907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19498 + ... + 117633.

It is an arithmetic number, because the mean of its divisors is an integer number (249580240).

Almost surely, 2^6728743908 is an apocalyptic number.

It is an amenable number.

6728743908 is an abundant number, since it is smaller than the sum of its proper divisors (11241033372).

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

6728743908 is a wasteful number, since it uses less digits than its factorization.

6728743908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137217 (or 137212 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The square root of 6728743908 is about 82028.9211680856. The cubic root of 6728743908 is about 1887.8957112419.

The spelling of 6728743908 in words is "six billion, seven hundred twenty-eight million, seven hundred forty-three thousand, nine hundred eight".