128251095 has 32 divisors (see below), whose sum is σ = 236098560. Its totient is φ = 58233600.

The previous prime is 128251093. The next prime is 128251127. The reversal of 128251095 is 590152821.

It is not a de Polignac number, because 128251095 - 2¹ = 128251093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128251093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11811 + ... + 19899.

It is an arithmetic number, because the mean of its divisors is an integer number (7378080).

Almost surely, 2^128251095 is an apocalyptic number.

128251095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128251095 is a deficient number, since it is larger than the sum of its proper divisors (107847465).

128251095 is a wasteful number, since it uses less digits than its factorization.

128251095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8255.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 128251095 is about 11324.7999982340. The cubic root of 128251095 is about 504.2977462450.

The spelling of 128251095 in words is "one hundred twenty-eight million, two hundred fifty-one thousand, ninety-five".