9830857728 has 44 divisors (see below), whose sum is σ = 26202828200. Its totient is φ = 3276951552.

The previous prime is 9830857667. The next prime is 9830857741. The reversal of 9830857728 is 8277580389.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1597003 + ... + 1603146.

Almost surely, 2^9830857728 is an apocalyptic number.

It is an amenable number.

9830857728 is an abundant number, since it is smaller than the sum of its proper divisors (16371970472).

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

9830857728 is a wasteful number, since it uses less digits than its factorization.

9830857728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200172 (or 3200154 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 57.

The square root of 9830857728 is about 99150.6819341148. The cubic root of 9830857728 is about 2142.2186882501.

The spelling of 9830857728 in words is "nine billion, eight hundred thirty million, eight hundred fifty-seven thousand, seven hundred twenty-eight".