6731423928 has 96 divisors (see below), whose sum is σ = 18450581760. Its totient is φ = 2216892480.

The previous prime is 6731423879. The next prime is 6731423939. The reversal of 6731423928 is 8293241376.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3596833 + ... + 3598703.

It is an arithmetic number, because the mean of its divisors is an integer number (192193560).

Almost surely, 2^6731423928 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 6731423928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9225290880).

6731423928 is an abundant number, since it is smaller than the sum of its proper divisors (11719157832).

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

6731423928 is a wasteful number, since it uses less digits than its factorization.

6731423928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457 (or 2450 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 6731423928 is about 82045.2553655603. The cubic root of 6731423928 is about 1888.1463239736.

The spelling of 6731423928 in words is "six billion, seven hundred thirty-one million, four hundred twenty-three thousand, nine hundred twenty-eight".