9920222620 has 192 divisors, whose sum is σ = 27494691840. Its totient is φ = 2912716800.

The previous prime is 9920222617. The next prime is 9920222651. The reversal of 9920222620 is 262220299.

9920222620 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 an unprimeable number.

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, 5763360 + ... + 5765080.

It is an arithmetic number, because the mean of its divisors is an integer number (143201520).

Almost surely, 2^9920222620 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 9920222620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13747345920).

9920222620 is an abundant number, since it is smaller than the sum of its proper divisors (17574469220).

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

9920222620 is a wasteful number, since it uses less digits than its factorization.

9920222620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 9920222620 is about 99600.3143569336. The cubic root of 9920222620 is about 2148.6902150377.

The spelling of 9920222620 in words is "nine billion, nine hundred twenty million, two hundred twenty-two thousand, six hundred twenty".