3068128728 has 144 divisors (see below), whose sum is σ = 9902397960. Its totient is φ = 855187200.

The previous prime is 3068128717. The next prime is 3068128783. The reversal of 3068128728 is 8278218603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 134043 + ... + 155253.

Almost surely, 2^3068128728 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 3068128728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4951198980).

3068128728 is an abundant number, since it is smaller than the sum of its proper divisors (6834269232).

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

3068128728 is a wasteful number, since it uses less digits than its factorization.

3068128728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21278 (or 21264 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 3068128728 is about 55390.6917089866. The cubic root of 3068128728 is about 1453.0855779912.

The spelling of 3068128728 in words is "three billion, sixty-eight million, one hundred twenty-eight thousand, seven hundred twenty-eight".