4043689728 has 144 divisors (see below), whose sum is σ = 11860759680. Its totient is φ = 1215148032.

The previous prime is 4043689711. The next prime is 4043689729. The reversal of 4043689728 is 8279863404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4043689729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424603 + ... + 434021.

Almost surely, 2^4043689728 is an apocalyptic number.

4043689728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4043689728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5930379840).

4043689728 is an abundant number, since it is smaller than the sum of its proper divisors (7817069952).

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

4043689728 is a wasteful number, since it uses less digits than its factorization.

4043689728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9494 (or 9480 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The square root of 4043689728 is about 63590.0128007535. The cubic root of 4043689728 is about 1593.1595636118.

The spelling of 4043689728 in words is "four billion, forty-three million, six hundred eighty-nine thousand, seven hundred twenty-eight".