128868338 has 16 divisors (see below), whose sum is σ = 195022080. Its totient is φ = 63863856.

The previous prime is 128868329. The next prime is 128868343. The reversal of 128868338 is 833868821.

It is a junction number, because it is equal to n+sod(n) for n = 128868292 and 128868301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148895 + ... + 149757.

It is an arithmetic number, because the mean of its divisors is an integer number (12188880).

Almost surely, 2^128868338 is an apocalyptic number.

128868338 is a deficient number, since it is larger than the sum of its proper divisors (66153742).

128868338 is a wasteful number, since it uses less digits than its factorization.

128868338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441.

The product of its digits is 442368, while the sum is 47.

The square root of 128868338 is about 11352.0191155583. The cubic root of 128868338 is about 505.1054748156.

The spelling of 128868338 in words is "one hundred twenty-eight million, eight hundred sixty-eight thousand, three hundred thirty-eight".