13224442 has 32 divisors (see below), whose sum is σ = 25067520. Its totient is φ = 5082480.

The previous prime is 13224391. The next prime is 13224457. The reversal of 13224442 is 24442231.

It is a happy number.

It is a super-2 number, since 2×13224442² = 349771732422728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11623 + ... + 12709.

It is an arithmetic number, because the mean of its divisors is an integer number (783360).

Almost surely, 2^13224442 is an apocalyptic number.

13224442 is a deficient number, since it is larger than the sum of its proper divisors (11843078).

13224442 is a wasteful number, since it uses less digits than its factorization.

13224442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186.

The product of its digits is 1536, while the sum is 22.

The square root of 13224442 is about 3636.5425887785. The cubic root of 13224442 is about 236.4789302238.

Adding to 13224442 its reverse (24442231), we get a palindrome (37666673).

The spelling of 13224442 in words is "thirteen million, two hundred twenty-four thousand, four hundred forty-two".