12144636 has 36 divisors (see below), whose sum is σ = 35085232. Its totient is φ = 3469824.

The previous prime is 12144631. The next prime is 12144637. The reversal of 12144636 is 63644121.

12144636 is a `hidden beast` number, since 1 + 21 + 4 + 4 + 636 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23845 + ... + 24348.

Almost surely, 2^12144636 is an apocalyptic number.

It is an amenable number.

12144636 is an abundant number, since it is smaller than the sum of its proper divisors (22940596).

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

12144636 is a wasteful number, since it uses less digits than its factorization.

12144636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48210 (or 48205 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 12144636 is about 3484.9154939539. The cubic root of 12144636 is about 229.8589935959.

Adding to 12144636 its reverse (63644121), we get a palindrome (75788757).

The spelling of 12144636 in words is "twelve million, one hundred forty-four thousand, six hundred thirty-six".