9220920 has 64 divisors (see below), whose sum is σ = 28321920. Its totient is φ = 2400384.

The previous prime is 9220891. The next prime is 9220951. The reversal of 9220920 is 290229.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4267 + ... + 6053.

It is an arithmetic number, because the mean of its divisors is an integer number (442530).

Almost surely, 2^9220920 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 9220920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14160960).

9220920 is an abundant number, since it is smaller than the sum of its proper divisors (19101000).

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

9220920 is a wasteful number, since it uses less digits than its factorization.

9220920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844 (or 1840 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 9220920 is about 3036.5967792909. The cubic root of 9220920 is about 209.6966140651.

It can be divided in two parts, 92209 and 20, that added together give a palindrome (92229).

The spelling of 9220920 in words is "nine million, two hundred twenty thousand, nine hundred twenty".