128786227228 has 36 divisors (see below), whose sum is σ = 231980588280. Its totient is φ = 62558413632.

The previous prime is 128786227183. The next prime is 128786227243. The reversal of 128786227228 is 822722687821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3689883 + ... + 3724621.

It is an arithmetic number, because the mean of its divisors is an integer number (6443905230).

Almost surely, 2^128786227228 is an apocalyptic number.

It is an amenable number.

128786227228 is a deficient number, since it is larger than the sum of its proper divisors (103194361052).

128786227228 is a wasteful number, since it uses less digits than its factorization.

128786227228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35494 (or 35455 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 55.

The spelling of 128786227228 in words is "one hundred twenty-eight billion, seven hundred eighty-six million, two hundred twenty-seven thousand, two hundred twenty-eight".