It is a self number, because there is not a number n which added to its sum of digits gives 213744.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 213744.
It is an unprimeable number.
2213744 is an apocalyptic number.
213744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 213744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284456).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
213744 is a wasteful number, since it uses less digits than its factorization.
213744 is an evil number, because the sum of its binary digits is even.
The square root of 213744 is about 462.3245613203. The cubic root of 213744 is about 59.7903796189.
The spelling of 213744 in words is "two hundred thirteen thousand, seven hundred forty-four".