128276228 has 6 divisors (see below), whose sum is σ = 224483406. Its totient is φ = 64138112.

The previous prime is 128276209. The next prime is 128276231. The reversal of 128276228 is 822672821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 71605444 + 56670784 = 8462^2 + 7528^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128276191 and 128276200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16034525 + ... + 16034532.

It is an arithmetic number, because the mean of its divisors is an integer number (37413901).

Almost surely, 2^128276228 is an apocalyptic number.

It is an amenable number.

128276228 is a deficient number, since it is larger than the sum of its proper divisors (96207178).

128276228 is a wasteful number, since it uses less digits than its factorization.

128276228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32069061 (or 32069059 counting only the distinct ones).

The product of its digits is 43008, while the sum is 38.

The square root of 128276228 is about 11325.9095881964. The cubic root of 128276228 is about 504.3306860221.

The spelling of 128276228 in words is "one hundred twenty-eight million, two hundred seventy-six thousand, two hundred twenty-eight".