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 343440.
It is an unprimeable number.
2343440 is an apocalyptic number.
343440 is a gapful number since it is divisible by the number (30) 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 343440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607662).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
343440 is a wasteful number, since it uses less digits than its factorization.
343440 is an odious number, because the sum of its binary digits is odd.
The square root of 343440 is about 586.0375414596. The cubic root of 343440 is about 70.0299191830.
Adding to 343440 its reverse (44343), we get a palindrome (387783).
The spelling of 343440 in words is "three hundred forty-three thousand, four hundred forty", and thus it is an iban number.