12128996 has 24 divisors (see below), whose sum is σ = 23540160. Its totient is φ = 5421600.

The previous prime is 12128969. The next prime is 12129017. The reversal of 12128996 is 69982121.

It is a super-2 number, since 2×12128996² = 294225087936032, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 425 + ... + 4943.

It is an arithmetic number, because the mean of its divisors is an integer number (980840).

Almost surely, 2^12128996 is an apocalyptic number.

It is an amenable number.

12128996 is a deficient number, since it is larger than the sum of its proper divisors (11411164).

12128996 is a wasteful number, since it uses less digits than its factorization.

12128996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4595 (or 4593 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 12128996 is about 3482.6708141884. The cubic root of 12128996 is about 229.7602795356.

The spelling of 12128996 in words is "twelve million, one hundred twenty-eight thousand, nine hundred ninety-six".