3256057728 has 576 divisors, whose sum is σ = 12189864960. Its totient is φ = 816076800.

The previous prime is 3256057711. The next prime is 3256057741. The reversal of 3256057728 is 8277506523.

3256057728 is a `hidden beast` number, since 3 + 2 + 56 + 0 + 577 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 45859933 + ... + 45860003.

It is an arithmetic number, because the mean of its divisors is an integer number (21162960).

Almost surely, 2^3256057728 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 3256057728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6094932480).

3256057728 is an abundant number, since it is smaller than the sum of its proper divisors (8933807232).

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

3256057728 is a wasteful number, since it uses less digits than its factorization.

3256057728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 3256057728 is about 57061.8763098446. The cubic root of 3256057728 is about 1482.1677704586.

It can be divided in two parts, 325605 and 7728, that added together give a palindrome (333333).

The spelling of 3256057728 in words is "three billion, two hundred fifty-six million, fifty-seven thousand, seven hundred twenty-eight".