6750757728 has 432 divisors, whose sum is σ = 23567858496. Its totient is φ = 1884280320.

The previous prime is 6750757649. The next prime is 6750757729. The reversal of 6750757728 is 8277570576.

6750757728 is a `hidden beast` number, since 67 + 5 + 0 + 7 + 577 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6750757729) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14455351 + ... + 14455817.

It is an arithmetic number, because the mean of its divisors is an integer number (54555228).

Almost surely, 2^6750757728 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 6750757728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11783929248).

6750757728 is an abundant number, since it is smaller than the sum of its proper divisors (16817100768).

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

6750757728 is a wasteful number, since it uses less digits than its factorization.

6750757728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 5762400, while the sum is 54.

The square root of 6750757728 is about 82162.9948821244. The cubic root of 6750757728 is about 1889.9522890450.

The spelling of 6750757728 in words is "six billion, seven hundred fifty million, seven hundred fifty-seven thousand, seven hundred twenty-eight".