128332938 has 8 divisors (see below), whose sum is σ = 256665888. Its totient is φ = 42777644.

The previous prime is 128332933. The next prime is 128332979. The reversal of 128332938 is 839233821.

It is a sphenic number, since it is the product of 3 distinct primes.

128332938 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 128332896 and 128332905.

It is not an unprimeable number, because it can be changed into a prime (128332931) 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 3 ways as a sum of consecutive naturals, for example, 10694406 + ... + 10694417.

It is an arithmetic number, because the mean of its divisors is an integer number (32083236).

Almost surely, 2^128332938 is an apocalyptic number.

128332938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128332938 is a wasteful number, since it uses less digits than its factorization.

128332938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21388828.

The product of its digits is 62208, while the sum is 39.

The square root of 128332938 is about 11328.4128632391. The cubic root of 128332938 is about 504.4049953985.

The spelling of 128332938 in words is "one hundred twenty-eight million, three hundred thirty-two thousand, nine hundred thirty-eight".