128211608 has 32 divisors (see below), whose sum is σ = 277184160. Its totient is φ = 54458880.

The previous prime is 128211607. The next prime is 128211647. The reversal of 128211608 is 806112821.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128211607) 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 7 ways as a sum of consecutive naturals, for example, 3803 + ... + 16458.

It is an arithmetic number, because the mean of its divisors is an integer number (8662005).

Almost surely, 2^128211608 is an apocalyptic number.

It is an amenable number.

128211608 is an abundant number, since it is smaller than the sum of its proper divisors (148972552).

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

128211608 is a wasteful number, since it uses less digits than its factorization.

128211608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20387 (or 20383 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 128211608 is about 11323.0564778244. The cubic root of 128211608 is about 504.2459851557.

The spelling of 128211608 in words is "one hundred twenty-eight million, two hundred eleven thousand, six hundred eight".