13644122 has 4 divisors (see below), whose sum is σ = 20466186. Its totient is φ = 6822060.

The previous prime is 13644107. The next prime is 13644133. The reversal of 13644122 is 22144631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12453841 + 1190281 = 3529^2 + 1091^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3411029 + ... + 3411032.

Almost surely, 2^13644122 is an apocalyptic number.

13644122 is a deficient number, since it is larger than the sum of its proper divisors (6822064).

13644122 is an equidigital number, since it uses as much as digits as its factorization.

13644122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6822063.

The product of its digits is 1152, while the sum is 23.

The square root of 13644122 is about 3693.7950674070. The cubic root of 13644122 is about 238.9544914314.

Adding to 13644122 its reverse (22144631), we get a palindrome (35788753).

The spelling of 13644122 in words is "thirteen million, six hundred forty-four thousand, one hundred twenty-two".