6744040728 has 64 divisors (see below), whose sum is σ = 17804553600. Its totient is φ = 2122848000.

The previous prime is 6744040711. The next prime is 6744040733. The reversal of 6744040728 is 8270404476.

It is a self number, because there is not a number n which added to its sum of digits gives 6744040728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119103 + ... + 166353.

It is an arithmetic number, because the mean of its divisors is an integer number (278196150).

Almost surely, 2^6744040728 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 6744040728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8902276800).

6744040728 is an abundant number, since it is smaller than the sum of its proper divisors (11060512872).

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

6744040728 is a wasteful number, since it uses less digits than its factorization.

6744040728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47592 (or 47588 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 42.

The square root of 6744040728 is about 82122.1086431662. The cubic root of 6744040728 is about 1889.3252472220.

The spelling of 6744040728 in words is "six billion, seven hundred forty-four million, forty thousand, seven hundred twenty-eight".