128144275 has 24 divisors (see below), whose sum is σ = 183495200. Its totient is φ = 86952960.

The previous prime is 128144251. The next prime is 128144287. The reversal of 128144275 is 572441821.

It is not a de Polignac number, because 128144275 - 2²⁵ = 94589843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128144275.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13201 + ... + 20749.

Almost surely, 2^128144275 is an apocalyptic number.

128144275 is a deficient number, since it is larger than the sum of its proper divisors (55350925).

128144275 is an equidigital number, since it uses as much as digits as its factorization.

128144275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7663 (or 7658 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 128144275 is about 11320.0828177183. The cubic root of 128144275 is about 504.1576979333.

The spelling of 128144275 in words is "one hundred twenty-eight million, one hundred forty-four thousand, two hundred seventy-five".