9806128320 has 224 divisors, whose sum is σ = 32444375040. Its totient is φ = 2506567680.

The previous prime is 9806128307. The next prime is 9806128327. The reversal of 9806128320 is 238216089.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9806128327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3242329 + ... + 3245351.

It is an arithmetic number, because the mean of its divisors is an integer number (144840960).

Almost surely, 2^9806128320 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 9806128320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16222187520).

9806128320 is an abundant number, since it is smaller than the sum of its proper divisors (22638246720).

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

9806128320 is a wasteful number, since it uses less digits than its factorization.

9806128320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183 (or 3173 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 9806128320 is about 99025.8972188589. The cubic root of 9806128320 is about 2140.4209379548.

The spelling of 9806128320 in words is "nine billion, eight hundred six million, one hundred twenty-eight thousand, three hundred twenty".