195840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a nialpdrome in base 12.
It is a congruent number.
It is an unprimeable number.
195840 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2195840 is an apocalyptic number.
195840 is a gapful number since it is divisible by the number (10) 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 195840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358722).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
195840 is a wasteful number, since it uses less digits than its factorization.
195840 is an evil number, because the sum of its binary digits is even.
The square root of 195840 is about 442.5381339501. The cubic root of 195840 is about 58.0720468130.
195840 divided by its product of nonzero digits (1440) gives a triangular number (136 = T16).
The spelling of 195840 in words is "one hundred ninety-five thousand, eight hundred forty".