128459238 has 16 divisors (see below), whose sum is σ = 257759040. Its totient is φ = 42679656.

The previous prime is 128459237. The next prime is 128459249. The reversal of 128459238 is 832954821.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 128459238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128459237) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 33028 + ... + 36711.

It is an arithmetic number, because the mean of its divisors is an integer number (16109940).

Almost surely, 2^128459238 is an apocalyptic number.

128459238 is an abundant number, since it is smaller than the sum of its proper divisors (129299802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128459238 is a wasteful number, since it uses less digits than its factorization.

128459238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70051.

The product of its digits is 138240, while the sum is 42.

The square root of 128459238 is about 11333.9859714048. The cubic root of 128459238 is about 504.5704126958.

The spelling of 128459238 in words is "one hundred twenty-eight million, four hundred fifty-nine thousand, two hundred thirty-eight".