128908 has 24 divisors (see below), whose sum is σ = 253232. Its totient is φ = 57024.

The previous prime is 128903. The next prime is 128923. The reversal of 128908 is 809821.

It is not an unprimeable number, because it can be changed into a prime (128903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1891 + ... + 1957.

2¹²⁸⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

128908 is a deficient number, since it is larger than the sum of its proper divisors (124324).

128908 is a wasteful number, since it uses less digits than its factorization.

128908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 128908 is about 359.0376024875. The cubic root of 128908 is about 50.5157288521.

The spelling of 128908 in words is "one hundred twenty-eight thousand, nine hundred eight".