195128 has 8 divisors (see below), whose sum is σ = 365880. Its totient is φ = 97560.

The previous prime is 195127. The next prime is 195131. The reversal of 195128 is 821591.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 195097 and 195106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12188 + ... + 12203.

It is an arithmetic number, because the mean of its divisors is an integer number (45735).

2¹⁹⁵¹²⁸ is an apocalyptic number.

It is an amenable number.

195128 is a deficient number, since it is larger than the sum of its proper divisors (170752).

195128 is a wasteful number, since it uses less digits than its factorization.

195128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24397 (or 24393 counting only the distinct ones).

The product of its digits is 720, while the sum is 26.

The square root of 195128 is about 441.7329510009. The cubic root of 195128 is about 58.0015853709.

It can be divided in two parts, 195 and 128, that added together give a palindrome (323).

The spelling of 195128 in words is "one hundred ninety-five thousand, one hundred twenty-eight".