6847139328 has 80 divisors (see below), whose sum is σ = 18409007760. Its totient is φ = 2261385216.

The previous prime is 6847139323. The next prime is 6847139363. The reversal of 6847139328 is 8239317486.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6847139323) 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, 146976 + ... + 187872.

It is an arithmetic number, because the mean of its divisors is an integer number (230112597).

Almost surely, 2^6847139328 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 6847139328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9204503880).

6847139328 is an abundant number, since it is smaller than the sum of its proper divisors (11561868432).

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

6847139328 is a wasteful number, since it uses less digits than its factorization.

6847139328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41027 (or 41011 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 6847139328 is about 82747.4430299813. The cubic root of 6847139328 is about 1898.9041998968.

The spelling of 6847139328 in words is "six billion, eight hundred forty-seven million, one hundred thirty-nine thousand, three hundred twenty-eight".