3072832728 has 128 divisors (see below), whose sum is σ = 9129024000. Its totient is φ = 861264768.

The previous prime is 3072832669. The next prime is 3072832769. The reversal of 3072832728 is 8272382703.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 3072832728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 432775 + ... + 439817.

It is an arithmetic number, because the mean of its divisors is an integer number (71320500).

Almost surely, 2^3072832728 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 3072832728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4564512000).

3072832728 is an abundant number, since it is smaller than the sum of its proper divisors (6056191272).

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

3072832728 is a wasteful number, since it uses less digits than its factorization.

3072832728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7126 (or 7108 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 3072832728 is about 55433.1374540536. The cubic root of 3072832728 is about 1453.8278137182.

The spelling of 3072832728 in words is "three billion, seventy-two million, eight hundred thirty-two thousand, seven hundred twenty-eight".