13662224 has 10 divisors (see below), whose sum is σ = 26470590. Its totient is φ = 6831104.

The previous prime is 13662221. The next prime is 13662247. The reversal of 13662224 is 42226631.

It can be written as a sum of positive squares in only one way, i.e., 11102224 + 2560000 = 3332^2 + 1600^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13662193 and 13662202.

It is not an unprimeable number, because it can be changed into a prime (13662221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426929 + ... + 426960.

It is an arithmetic number, because the mean of its divisors is an integer number (2647059).

Almost surely, 2^13662224 is an apocalyptic number.

It is an amenable number.

13662224 is a deficient number, since it is larger than the sum of its proper divisors (12808366).

13662224 is an equidigital number, since it uses as much as digits as its factorization.

13662224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853897 (or 853891 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 13662224 is about 3696.2445806521. The cubic root of 13662224 is about 239.0601203773.

Adding to 13662224 its reverse (42226631), we get a palindrome (55888855).

The spelling of 13662224 in words is "thirteen million, six hundred sixty-two thousand, two hundred twenty-four".