128338858 has 8 divisors (see below), whose sum is σ = 196604352. Its totient is φ = 62804076.

The previous prime is 128338849. The next prime is 128338877. The reversal of 128338858 is 858833821.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682560 + ... + 682747.

It is an arithmetic number, because the mean of its divisors is an integer number (24575544).

Almost surely, 2^128338858 is an apocalyptic number.

128338858 is a deficient number, since it is larger than the sum of its proper divisors (68265494).

128338858 is a wasteful number, since it uses less digits than its factorization.

128338858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365356.

The product of its digits is 368640, while the sum is 46.

The square root of 128338858 is about 11328.6741501378. The cubic root of 128338858 is about 504.4127513487.

The spelling of 128338858 in words is "one hundred twenty-eight million, three hundred thirty-eight thousand, eight hundred fifty-eight".