128186228 has 12 divisors (see below), whose sum is σ = 224677152. Its totient is φ = 63992760.

The previous prime is 128186221. The next prime is 128186231. The reversal of 128186228 is 822681821.

It is a junction number, because it is equal to n+sod(n) for n = 128186191 and 128186200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128186221) 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, 22178 + ... + 27353.

It is an arithmetic number, because the mean of its divisors is an integer number (18723096).

Almost surely, 2^128186228 is an apocalyptic number.

It is an amenable number.

128186228 is a deficient number, since it is larger than the sum of its proper divisors (96490924).

128186228 is a wasteful number, since it uses less digits than its factorization.

128186228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50182 (or 50180 counting only the distinct ones).

The product of its digits is 24576, while the sum is 38.

The square root of 128186228 is about 11321.9357002237. The cubic root of 128186228 is about 504.2127104576.

The spelling of 128186228 in words is "one hundred twenty-eight million, one hundred eighty-six thousand, two hundred twenty-eight".