9222720 has 112 divisors (see below), whose sum is σ = 31577280. Its totient is φ = 2267136.

The previous prime is 9222713. The next prime is 9222727. The reversal of 9222720 is 272229.

It is an interprime number because it is at equal distance from previous prime (9222713) and next prime (9222727).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9222727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12111 + ... + 12849.

It is an arithmetic number, because the mean of its divisors is an integer number (281940).

Almost surely, 2^9222720 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 9222720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15788640).

9222720 is an abundant number, since it is smaller than the sum of its proper divisors (22354560).

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

9222720 is a wasteful number, since it uses less digits than its factorization.

9222720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 9222720 is about 3036.8931492563. The cubic root of 9222720 is about 209.7102580163.

Adding to 9222720 its reverse (272229), we get a palindrome (9494949).

The spelling of 9222720 in words is "nine million, two hundred twenty-two thousand, seven hundred twenty".