3028641728 has 56 divisors (see below), whose sum is σ = 6885736800. Its totient is φ = 1294737408.

The previous prime is 3028641727. The next prime is 3028641731. The reversal of 3028641728 is 8271468203.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3028641727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174968 + ... + 191496.

Almost surely, 2^3028641728 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 3028641728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3442868400).

3028641728 is an abundant number, since it is smaller than the sum of its proper divisors (3857095072).

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

3028641728 is a wasteful number, since it uses less digits than its factorization.

3028641728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16957 (or 16947 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 3028641728 is about 55033.0966601008. The cubic root of 3028641728 is about 1446.8248760789.

The spelling of 3028641728 in words is "three billion, twenty-eight million, six hundred forty-one thousand, seven hundred twenty-eight".