128664108 has 36 divisors (see below), whose sum is σ = 326675440. Its totient is φ = 42698016.

The previous prime is 128664103. The next prime is 128664119. The reversal of 128664108 is 801466821.

128664108 is a `hidden beast` number, since 1 + 2 + 8 + 6 + 641 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (128664101) 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 11 ways as a sum of consecutive naturals, for example, 441 + ... + 16047.

Almost surely, 2^128664108 is an apocalyptic number.

128664108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128664108 is an abundant number, since it is smaller than the sum of its proper divisors (198011332).

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

128664108 is a wasteful number, since it uses less digits than its factorization.

128664108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15846 (or 15841 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 128664108 is about 11343.0202327246. The cubic root of 128664108 is about 504.8385040572.

The spelling of 128664108 in words is "one hundred twenty-eight million, six hundred sixty-four thousand, one hundred eight".