128568195 has 128 divisors (see below), whose sum is σ = 283668480. Its totient is φ = 53913600.

The previous prime is 128568179. The next prime is 128568199. The reversal of 128568195 is 591865821.

It is a happy number.

It is not a de Polignac number, because 128568195 - 2⁴ = 128568179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 128568195.

It is not an unprimeable number, because it can be changed into a prime (128568199) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 851370 + ... + 851520.

It is an arithmetic number, because the mean of its divisors is an integer number (2216160).

Almost surely, 2^128568195 is an apocalyptic number.

128568195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128568195 is an abundant number, since it is smaller than the sum of its proper divisors (155100285).

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

128568195 is a wasteful number, since it uses less digits than its factorization.

128568195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 236 counting only the distinct ones).

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

The square root of 128568195 is about 11338.7916022828. The cubic root of 128568195 is about 504.7130284735.

The spelling of 128568195 in words is "one hundred twenty-eight million, five hundred sixty-eight thousand, one hundred ninety-five".