6728447504 has 40 divisors (see below), whose sum is σ = 13773672000. Its totient is φ = 3175272576.

The previous prime is 6728447477. The next prime is 6728447507. The reversal of 6728447504 is 4057448276.

It is not an unprimeable number, because it can be changed into a prime (6728447507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40637 + ... + 122915.

It is an arithmetic number, because the mean of its divisors is an integer number (344341800).

Almost surely, 2^6728447504 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 6728447504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6886836000).

6728447504 is an abundant number, since it is smaller than the sum of its proper divisors (7045224496).

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

6728447504 is a wasteful number, since it uses less digits than its factorization.

6728447504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82575 (or 82569 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 47.

The square root of 6728447504 is about 82027.1144439447. The cubic root of 6728447504 is about 1887.8679899680.

The spelling of 6728447504 in words is "six billion, seven hundred twenty-eight million, four hundred forty-seven thousand, five hundred four".