12128194 has 16 divisors (see below), whose sum is σ = 20623680. Its totient is φ = 5302800.

The previous prime is 12128189. The next prime is 12128219. The reversal of 12128194 is 49182121.

12128194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11782 + ... + 12769.

It is an arithmetic number, because the mean of its divisors is an integer number (1288980).

Almost surely, 2^12128194 is an apocalyptic number.

12128194 is a deficient number, since it is larger than the sum of its proper divisors (8495486).

12128194 is a wasteful number, since it uses less digits than its factorization.

12128194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24585.

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

The square root of 12128194 is about 3482.5556707682. Note that the first 3 decimals coincide. The cubic root of 12128194 is about 229.7552153131.

The spelling of 12128194 in words is "twelve million, one hundred twenty-eight thousand, one hundred ninety-four".