12156196 has 24 divisors (see below), whose sum is σ = 23071160. Its totient is φ = 5571072.

The previous prime is 12156187. The next prime is 12156197. The reversal of 12156196 is 69165121.

12156196 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 4 ways, for example, as 45796 + 12110400 = 214^2 + 3480^2 .

It is not an unprimeable number, because it can be changed into a prime (12156197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7420 + ... + 8908.

Almost surely, 2^12156196 is an apocalyptic number.

It is an amenable number.

12156196 is a deficient number, since it is larger than the sum of its proper divisors (10914964).

12156196 is a wasteful number, since it uses less digits than its factorization.

12156196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663 (or 1661 counting only the distinct ones).

The product of its digits is 3240, while the sum is 31.

The square root of 12156196 is about 3486.5736762616. The cubic root of 12156196 is about 229.9319017046.

The spelling of 12156196 in words is "twelve million, one hundred fifty-six thousand, one hundred ninety-six".