3933856728 has 96 divisors (see below), whose sum is σ = 11135779200. Its totient is φ = 1252952064.

The previous prime is 3933856721. The next prime is 3933856733. The reversal of 3933856728 is 8276583393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3933856721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192825 + ... + 212247.

It is an arithmetic number, because the mean of its divisors is an integer number (115997700).

Almost surely, 2^3933856728 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 3933856728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5567889600).

3933856728 is an abundant number, since it is smaller than the sum of its proper divisors (7201922472).

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

3933856728 is a wasteful number, since it uses less digits than its factorization.

3933856728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19561 (or 19554 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The square root of 3933856728 is about 62720.4649855213. The cubic root of 3933856728 is about 1578.6027180964.

The spelling of 3933856728 in words is "three billion, nine hundred thirty-three million, eight hundred fifty-six thousand, seven hundred twenty-eight".