It is a self number, because there is not a number n which added to its sum of digits gives 13613236.
It is a congruent number.
Almost surely, 213613236 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 13613236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14817600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13613236 is a wasteful number, since it uses less digits than its factorization.
13613236 is an evil number, because the sum of its binary digits is even.
The square root of 13613236 is about 3689.6119037102. The cubic root of 13613236 is about 238.7740492756.
Adding to 13613236 its reverse (63231631), we get a palindrome (76844867).
The spelling of 13613236 in words is "thirteen million, six hundred thirteen thousand, two hundred thirty-six".