195900120 has 160 divisors (see below), whose sum is σ = 709243920. Its totient is φ = 48211200.

The previous prime is 195900073. The next prime is 195900121. The reversal of 195900120 is 21009591.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195900121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 39795 + ... + 44445.

Almost surely, 2^195900120 is an apocalyptic number.

195900120 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 195900120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354621960).

195900120 is an abundant number, since it is smaller than the sum of its proper divisors (513343800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195900120 is a wasteful number, since it uses less digits than its factorization.

195900120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687 (or 4674 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 195900120 is about 13996.4324025803. The cubic root of 195900120 is about 580.7798862647.

The spelling of 195900120 in words is "one hundred ninety-five million, nine hundred thousand, one hundred twenty".