195988120 has 64 divisors (see below), whose sum is σ = 458006400. Its totient is φ = 75425280.

The previous prime is 195988099. The next prime is 195988123. The reversal of 195988120 is 21889591.

195988120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×195988120² = 76822686362268800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195988123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113826 + ... + 115534.

It is an arithmetic number, because the mean of its divisors is an integer number (7156350).

Almost surely, 2^195988120 is an apocalyptic number.

195988120 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 195988120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229003200).

195988120 is an abundant number, since it is smaller than the sum of its proper divisors (262018280).

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

195988120 is a wasteful number, since it uses less digits than its factorization.

195988120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828 (or 1824 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 43.

The square root of 195988120 is about 13999.5757078563. The cubic root of 195988120 is about 580.8668370011.

The spelling of 195988120 in words is "one hundred ninety-five million, nine hundred eighty-eight thousand, one hundred twenty".