9220720800 has 144 divisors (see below), whose sum is σ = 30126321792. Its totient is φ = 2449612800.

The previous prime is 9220720741. The next prime is 9220720807. The reversal of 9220720800 is 80270229.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (9220720807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 643312 + ... + 657488.

It is an arithmetic number, because the mean of its divisors is an integer number (209210568).

Almost surely, 2^9220720800 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 9220720800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15063160896).

9220720800 is an abundant number, since it is smaller than the sum of its proper divisors (20905600992).

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

9220720800 is a wasteful number, since it uses less digits than its factorization.

9220720800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14471 (or 14458 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 9220720800 is about 96024.5843521335. The cubic root of 9220720800 is about 2096.9510402543.

The spelling of 9220720800 in words is "nine billion, two hundred twenty million, seven hundred twenty thousand, eight hundred".