9144220 has 24 divisors (see below), whose sum is σ = 19386864. Its totient is φ = 3622656.

The previous prime is 9144209. The next prime is 9144221. The reversal of 9144220 is 224419.

9144220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 9144191 and 9144200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9144221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4 + ... + 4276.

It is an arithmetic number, because the mean of its divisors is an integer number (807786).

Almost surely, 2^9144220 is an apocalyptic number.

It is an amenable number.

9144220 is an abundant number, since it is smaller than the sum of its proper divisors (10242644).

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

9144220 is a wasteful number, since it uses less digits than its factorization.

9144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4389 (or 4387 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 9144220 is about 3023.9411369932. The cubic root of 9144220 is about 209.1135727281.

Adding to 9144220 its reverse (224419), we get a palindrome (9368639).

The spelling of 9144220 in words is "nine million, one hundred forty-four thousand, two hundred twenty".