9221713920 has 624 divisors, whose sum is σ = 35420505120. Its totient is φ = 2293235712.

The previous prime is 9221713889. The next prime is 9221713931. The reversal of 9221713920 is 293171229.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84602826 + ... + 84602934.

It is an arithmetic number, because the mean of its divisors is an integer number (56763630).

Almost surely, 2^9221713920 is an apocalyptic number.

9221713920 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9221713920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17710252560).

9221713920 is an abundant number, since it is smaller than the sum of its proper divisors (26198791200).

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

9221713920 is a wasteful number, since it uses less digits than its factorization.

9221713920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 9221713920 is about 96029.7553886294. The cubic root of 9221713920 is about 2097.0263217606.

The spelling of 9221713920 in words is "nine billion, two hundred twenty-one million, seven hundred thirteen thousand, nine hundred twenty".