128273212 has 12 divisors (see below), whose sum is σ = 225419040. Its totient is φ = 63867776.

The previous prime is 128273207. The next prime is 128273267. The reversal of 128273212 is 212372821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66133 + ... + 68044.

It is an arithmetic number, because the mean of its divisors is an integer number (18784920).

Almost surely, 2^128273212 is an apocalyptic number.

It is an amenable number.

128273212 is a deficient number, since it is larger than the sum of its proper divisors (97145828).

128273212 is a wasteful number, since it uses less digits than its factorization.

128273212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134420 (or 134418 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 128273212 is about 11325.7764413748. The cubic root of 128273212 is about 504.3267334236.

The spelling of 128273212 in words is "one hundred twenty-eight million, two hundred seventy-three thousand, two hundred twelve".