9728965740 has 192 divisors, whose sum is σ = 30263071104. Its totient is φ = 2319777792.

The previous prime is 9728965721. The next prime is 9728965783. The reversal of 9728965740 is 475698279.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7993612 + ... + 7994828.

It is an arithmetic number, because the mean of its divisors is an integer number (157620162).

Almost surely, 2^9728965740 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 9728965740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15131535552).

9728965740 is an abundant number, since it is smaller than the sum of its proper divisors (20534105364).

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

9728965740 is a wasteful number, since it uses less digits than its factorization.

9728965740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556 (or 1554 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 57.

The square root of 9728965740 is about 98635.5196671057. The cubic root of 9728965740 is about 2134.7919575997.

The spelling of 9728965740 in words is "nine billion, seven hundred twenty-eight million, nine hundred sixty-five thousand, seven hundred forty".