128845128 has 16 divisors (see below), whose sum is σ = 322112880. Its totient is φ = 42948368.

The previous prime is 128845127. The next prime is 128845141. The reversal of 128845128 is 821548821.

It is not an unprimeable number, because it can be changed into a prime (128845127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2684250 + ... + 2684297.

It is an arithmetic number, because the mean of its divisors is an integer number (20132055).

Almost surely, 2^128845128 is an apocalyptic number.

It is an amenable number.

128845128 is an abundant number, since it is smaller than the sum of its proper divisors (193267752).

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

128845128 is a wasteful number, since it uses less digits than its factorization.

128845128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368556 (or 5368552 counting only the distinct ones).

The product of its digits is 40960, while the sum is 39.

The square root of 128845128 is about 11350.9967844238. The cubic root of 128845128 is about 505.0751487682.

The spelling of 128845128 in words is "one hundred twenty-eight million, eight hundred forty-five thousand, one hundred twenty-eight".