9220840 has 32 divisors (see below), whose sum is σ = 21465000. Its totient is φ = 3560704.

The previous prime is 9220829. The next prime is 9220847. The reversal of 9220840 is 480229.

It can be written as a sum of positive squares in 4 ways, for example, as 7387524 + 1833316 = 2718^2 + 1354^2 .

It is not an unprimeable number, because it can be changed into a prime (9220847) 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 7 ways as a sum of consecutive naturals, for example, 2815 + ... + 5134.

Almost surely, 2^9220840 is an apocalyptic number.

It is an amenable number.

9220840 is an abundant number, since it is smaller than the sum of its proper divisors (12244160).

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

9220840 is a wasteful number, since it uses less digits than its factorization.

9220840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7989 (or 7985 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 9220840 is about 3036.5836066211. The cubic root of 9220840 is about 209.6960076261.

The spelling of 9220840 in words is "nine million, two hundred twenty thousand, eight hundred forty".