128194068 has 48 divisors (see below), whose sum is σ = 306161856. Its totient is φ = 41733120.

The previous prime is 128194063. The next prime is 128194139. The reversal of 128194068 is 860491821.

It is a Smith number, since the sum of its digits (39) 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 (128194061) 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 15 ways as a sum of consecutive naturals, for example, 224223 + ... + 224793.

It is an arithmetic number, because the mean of its divisors is an integer number (6378372).

Almost surely, 2^128194068 is an apocalyptic number.

It is an amenable number.

128194068 is an abundant number, since it is smaller than the sum of its proper divisors (177967788).

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

128194068 is a wasteful number, since it uses less digits than its factorization.

128194068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 128194068 is about 11322.2819254777. The cubic root of 128194068 is about 504.2229896354. Note that the first 3 decimals are identical.

The spelling of 128194068 in words is "one hundred twenty-eight million, one hundred ninety-four thousand, sixty-eight".