12394128 has 20 divisors (see below), whose sum is σ = 32018288. Its totient is φ = 4131360.

The previous prime is 12394121. The next prime is 12394133. The reversal of 12394128 is 82149321.

12394128 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12394128² = 307228817760768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12394095 and 12394104.

It is not an unprimeable number, because it can be changed into a prime (12394121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129058 + ... + 129153.

Almost surely, 2^12394128 is an apocalyptic number.

It is an amenable number.

12394128 is an abundant number, since it is smaller than the sum of its proper divisors (19624160).

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

12394128 is a wasteful number, since it uses less digits than its factorization.

12394128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258222 (or 258216 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 12394128 is about 3520.5295056284. The cubic root of 12394128 is about 231.4223640201.

The spelling of 12394128 in words is "twelve million, three hundred ninety-four thousand, one hundred twenty-eight".