13320224 has 12 divisors (see below), whose sum is σ = 26224254. Its totient is φ = 6660096.

The previous prime is 13320221. The next prime is 13320233. The reversal of 13320224 is 42202331.

It can be written as a sum of positive squares in only one way, i.e., 7463824 + 5856400 = 2732^2 + 2420^2 .

It is not an unprimeable number, because it can be changed into a prime (13320221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208097 + ... + 208160.

Almost surely, 2^13320224 is an apocalyptic number.

It is an amenable number.

13320224 is a deficient number, since it is larger than the sum of its proper divisors (12904030).

13320224 is an equidigital number, since it uses as much as digits as its factorization.

13320224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416267 (or 416259 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 13320224 is about 3649.6882058609. The cubic root of 13320224 is about 237.0484806493.

Adding to 13320224 its reverse (42202331), we get a palindrome (55522555).

The spelling of 13320224 in words is "thirteen million, three hundred twenty thousand, two hundred twenty-four".