13224136 has 16 divisors (see below), whose sum is σ = 25263900. Its totient is φ = 6487104.

The previous prime is 13224131. The next prime is 13224137. The reversal of 13224136 is 63142231.

It can be written as a sum of positive squares in 2 ways, for example, as 13003236 + 220900 = 3606^2 + 470^2 .

It is not an unprimeable number, because it can be changed into a prime (13224131) 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, 15171 + ... + 16018.

Almost surely, 2^13224136 is an apocalyptic number.

It is an amenable number.

13224136 is a deficient number, since it is larger than the sum of its proper divisors (12039764).

13224136 is a wasteful number, since it uses less digits than its factorization.

13224136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31248 (or 31244 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 13224136 is about 3636.5005156056. The cubic root of 13224136 is about 236.4771062499.

Adding to 13224136 its reverse (63142231), we get a palindrome (76366367).

The spelling of 13224136 in words is "thirteen million, two hundred twenty-four thousand, one hundred thirty-six".