It is a Curzon number.
It is a plaindrome in base 11.
It is a nialpdrome in base 3 and base 7.
It is a congruent number.
It is an unprimeable number.
216398 is an apocalyptic number.
16398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
16398 is a wasteful number, since it uses less digits than its factorization.
16398 is an evil number, because the sum of its binary digits is even.
The square root of 16398 is about 128.0546758225. The cubic root of 16398 is about 25.4056490215.
The spelling of 16398 in words is "sixteen thousand, three hundred ninety-eight".