128122228 has 24 divisors (see below), whose sum is σ = 243728352. Its totient is φ = 58578144.

The previous prime is 128122201. The next prime is 128122229. The reversal of 128122228 is 822221821.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 128122196 and 128122205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128122229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5950 + ... + 17077.

It is an arithmetic number, because the mean of its divisors is an integer number (10155348).

Almost surely, 2^128122228 is an apocalyptic number.

It is an amenable number.

128122228 is a deficient number, since it is larger than the sum of its proper divisors (115606124).

128122228 is a wasteful number, since it uses less digits than its factorization.

128122228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23151 (or 23149 counting only the distinct ones).

The product of its digits is 2048, while the sum is 28.

The square root of 128122228 is about 11319.1089755334. The cubic root of 128122228 is about 504.1287831229.

The spelling of 128122228 in words is "one hundred twenty-eight million, one hundred twenty-two thousand, two hundred twenty-eight".