12198128 has 20 divisors (see below), whose sum is σ = 24397248. Its totient is φ = 5902080.

The previous prime is 12198113. The next prime is 12198139. The reversal of 12198128 is 82189121.

12198128 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12198094 and 12198103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11801 + ... + 12792.

Almost surely, 2^12198128 is an apocalyptic number.

It is an amenable number.

12198128 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12198128 is a wasteful number, since it uses less digits than its factorization.

12198128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24632 (or 24626 counting only the distinct ones).

The product of its digits is 2304, while the sum is 32.

The square root of 12198128 is about 3492.5818530136. The cubic root of 12198128 is about 230.1959766336.

The spelling of 12198128 in words is "twelve million, one hundred ninety-eight thousand, one hundred twenty-eight".