195568128 has 320 divisors, whose sum is σ = 691384320. Its totient is φ = 53415936.

The previous prime is 195568117. The next prime is 195568129. The reversal of 195568128 is 821865591.

It is a happy number.

195568128 is a `hidden beast` number, since 19 + 556 + 81 + 2 + 8 = 666.

195568128 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 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195568129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4161001 + ... + 4161047.

It is an arithmetic number, because the mean of its divisors is an integer number (2160576).

Almost surely, 2^195568128 is an apocalyptic number.

195568128 is a gapful number since it is divisible by the number (18) 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 195568128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345692160).

195568128 is an abundant number, since it is smaller than the sum of its proper divisors (495816192).

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

195568128 is an equidigital number, since it uses as much as digits as its factorization.

195568128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 102 counting only the distinct ones).

The product of its digits is 172800, while the sum is 45.

The square root of 195568128 is about 13984.5674942059. The cubic root of 195568128 is about 580.4516181325.

The spelling of 195568128 in words is "one hundred ninety-five million, five hundred sixty-eight thousand, one hundred twenty-eight".