13644202 has 24 divisors (see below), whose sum is σ = 24232068. Its totient is φ = 5723520.

The previous prime is 13644193. The next prime is 13644203. The reversal of 13644202 is 20244631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10106041 + 3538161 = 3179^2 + 1881^2 .

It is a super-5 number, since 5×13644202⁵ (a number of 37 digits) contains 55555 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (13644203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 978 + ... + 5314.

Almost surely, 2^13644202 is an apocalyptic number.

13644202 is a deficient number, since it is larger than the sum of its proper divisors (10587866).

13644202 is a wasteful number, since it uses less digits than its factorization.

13644202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374 (or 4363 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 13644202 is about 3693.8058963622. The cubic root of 13644202 is about 238.9549584536.

Adding to 13644202 its reverse (20244631), we get a palindrome (33888833).

The spelling of 13644202 in words is "thirteen million, six hundred forty-four thousand, two hundred two".