128338382 has 4 divisors (see below), whose sum is σ = 192507576. Its totient is φ = 64169190.

The previous prime is 128338381. The next prime is 128338403. The reversal of 128338382 is 283833821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 283833821 = 229 ⋅1239449.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128338381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32084594 + ... + 32084597.

It is an arithmetic number, because the mean of its divisors is an integer number (48126894).

Almost surely, 2^128338382 is an apocalyptic number.

128338382 is a deficient number, since it is larger than the sum of its proper divisors (64169194).

128338382 is an equidigital number, since it uses as much as digits as its factorization.

128338382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64169193.

The product of its digits is 55296, while the sum is 38.

The square root of 128338382 is about 11328.6531414816. The cubic root of 128338382 is about 504.4121277372.

The spelling of 128338382 in words is "one hundred twenty-eight million, three hundred thirty-eight thousand, three hundred eighty-two".