128146238 has 64 divisors (see below), whose sum is σ = 232860096. Its totient is φ = 52224000.

The previous prime is 128146229. The next prime is 128146243. The reversal of 128146238 is 832641821.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 128146198 and 128146207.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 935306 + ... + 935442.

It is an arithmetic number, because the mean of its divisors is an integer number (3638439).

Almost surely, 2^128146238 is an apocalyptic number.

128146238 is a deficient number, since it is larger than the sum of its proper divisors (104713858).

128146238 is a wasteful number, since it uses less digits than its factorization.

128146238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269.

The product of its digits is 18432, while the sum is 35.

The square root of 128146238 is about 11320.1695216989. The cubic root of 128146238 is about 504.1602722622.

The spelling of 128146238 in words is "one hundred twenty-eight million, one hundred forty-six thousand, two hundred thirty-eight".