3319942728 has 64 divisors (see below), whose sum is σ = 8790082560. Its totient is φ = 1042721856.

The previous prime is 3319942721. The next prime is 3319942739. The reversal of 3319942728 is 8272499133.

It is a super-2 number, since 2×3319942728² = 22044039434400163968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3319942721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7900 + ... + 81867.

It is an arithmetic number, because the mean of its divisors is an integer number (137345040).

Almost surely, 2^3319942728 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 3319942728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4395041280).

3319942728 is an abundant number, since it is smaller than the sum of its proper divisors (5470139832).

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

3319942728 is a wasteful number, since it uses less digits than its factorization.

3319942728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89866 (or 89862 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The square root of 3319942728 is about 57618.9441763731. The cubic root of 3319942728 is about 1491.7986069381.

The spelling of 3319942728 in words is "three billion, three hundred nineteen million, nine hundred forty-two thousand, seven hundred twenty-eight".