128255228 has 12 divisors (see below), whose sum is σ = 224557200. Its totient is φ = 64096032.

The previous prime is 128255221. The next prime is 128255251. The reversal of 128255228 is 822552821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128255221) 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, 2873 + ... + 16271.

It is an arithmetic number, because the mean of its divisors is an integer number (18713100).

Almost surely, 2^128255228 is an apocalyptic number.

It is an amenable number.

128255228 is a deficient number, since it is larger than the sum of its proper divisors (96301972).

128255228 is a wasteful number, since it uses less digits than its factorization.

128255228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15796 (or 15794 counting only the distinct ones).

The product of its digits is 25600, while the sum is 35.

The square root of 128255228 is about 11324.9824723926. The cubic root of 128255228 is about 504.3031633273.

The spelling of 128255228 in words is "one hundred twenty-eight million, two hundred fifty-five thousand, two hundred twenty-eight".