9920648892 has 192 divisors, whose sum is σ = 30429020160. Its totient is φ = 2440281600.

The previous prime is 9920648891. The next prime is 9920648921. The reversal of 9920648892 is 2988460299.

9920648892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920648891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1342584 + ... + 1349952.

It is an arithmetic number, because the mean of its divisors is an integer number (158484480).

Almost surely, 2^9920648892 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 9920648892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15214510080).

9920648892 is an abundant number, since it is smaller than the sum of its proper divisors (20508371268).

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

9920648892 is a wasteful number, since it uses less digits than its factorization.

9920648892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7472 (or 7470 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 57.

The square root of 9920648892 is about 99602.4542468708. The cubic root of 9920648892 is about 2148.7209910055.

The spelling of 9920648892 in words is "nine billion, nine hundred twenty million, six hundred forty-eight thousand, eight hundred ninety-two".