6340573728 has 168 divisors, whose sum is σ = 19117461888. Its totient is φ = 2068198272.

The previous prime is 6340573697. The next prime is 6340573753. The reversal of 6340573728 is 8273750436.

6340573728 is a `hidden beast` number, since 6 + 3 + 4 + 0 + 573 + 72 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1093525 + ... + 1099307.

It is an arithmetic number, because the mean of its divisors is an integer number (113794416).

Almost surely, 2^6340573728 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 6340573728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9558730944).

6340573728 is an abundant number, since it is smaller than the sum of its proper divisors (12776888160).

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

6340573728 is an equidigital number, since it uses as much as digits as its factorization.

6340573728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5858 (or 5835 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The square root of 6340573728 is about 79627.7195956283. The cubic root of 6340573728 is about 1850.8711483270.

The spelling of 6340573728 in words is "six billion, three hundred forty million, five hundred seventy-three thousand, seven hundred twenty-eight".