12189036 has 12 divisors (see below), whose sum is σ = 28441112. Its totient is φ = 4063008.

The previous prime is 12189031. The next prime is 12189041. The reversal of 12189036 is 63098121.

It is an interprime number because it is at equal distance from previous prime (12189031) and next prime (12189041).

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 12188994 and 12189012.

It is not an unprimeable number, because it can be changed into a prime (12189031) 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, 507865 + ... + 507888.

Almost surely, 2^12189036 is an apocalyptic number.

It is an amenable number.

12189036 is an abundant number, since it is smaller than the sum of its proper divisors (16252076).

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

12189036 is a wasteful number, since it uses less digits than its factorization.

12189036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015760 (or 1015758 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 12189036 is about 3491.2799945006. The cubic root of 12189036 is about 230.1387694394.

The spelling of 12189036 in words is "twelve million, one hundred eighty-nine thousand, thirty-six".