128938232 has 16 divisors (see below), whose sum is σ = 241901640. Its totient is φ = 64431136.

The previous prime is 128938231. The next prime is 128938279. The reversal of 128938232 is 232839821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128938231) 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 3 ways as a sum of consecutive naturals, for example, 14063 + ... + 21345.

Almost surely, 2^128938232 is an apocalyptic number.

It is an amenable number.

128938232 is a deficient number, since it is larger than the sum of its proper divisors (112963408).

128938232 is a wasteful number, since it uses less digits than its factorization.

128938232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9502 (or 9498 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 128938232 is about 11355.0971814423. The cubic root of 128938232 is about 505.1967759114.

The spelling of 128938232 in words is "one hundred twenty-eight million, nine hundred thirty-eight thousand, two hundred thirty-two".