195920 has 40 divisors (see below), whose sum is σ = 476160. Its totient is φ = 74880.
The previous prime is 195919. The next prime is 195929. The reversal of 195920 is 29591.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (40).
It is a self number, because there is not a number n which added to its sum of digits gives 195920.
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 195920.
It is not an unprimeable number, because it can be changed into a prime (195929) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2441 + ... + 2519.
It is an arithmetic number, because the mean of its divisors is an integer number (11904).
2195920 is an apocalyptic number.
195920 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 195920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238080).
195920 is an abundant number, since it is smaller than the sum of its proper divisors (280240).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
195920 is a wasteful number, since it uses less digits than its factorization.
195920 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 123 (or 117 counting only the distinct ones).
The product of its (nonzero) digits is 810, while the sum is 26.
The square root of 195920 is about 442.6285124119. The cubic root of 195920 is about 58.0799531503.
The spelling of 195920 in words is "one hundred ninety-five thousand, nine hundred twenty".
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