1224224 has 24 divisors (see below), whose sum is σ = 2450448. Its totient is φ = 601920.

The previous prime is 1224217. The next prime is 1224229. The reversal of 1224224 is 4224221.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1224229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1859 + ... + 2429.

It is an arithmetic number, because the mean of its divisors is an integer number (102102).

2^1224224 is an apocalyptic number.

It is an amenable number.

1224224 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1224224 is an equidigital number, since it uses as much as digits as its factorization.

1224224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 640 counting only the distinct ones).

The product of its digits is 256, while the sum is 17.

The square root of 1224224 is about 1106.4465644576. The cubic root of 1224224 is about 106.9761498069.

Adding to 1224224 its reverse (4224221), we get a palindrome (5448445).

The spelling of 1224224 in words is "one million, two hundred twenty-four thousand, two hundred twenty-four".