12072636 has 36 divisors (see below), whose sum is σ = 30626232. Its totient is φ = 4009824.

The previous prime is 12072617. The next prime is 12072649. The reversal of 12072636 is 63627021.

It is a happy number.

12072636 is a `hidden beast` number, since 1 + 20 + 7 + 2 + 636 = 666.

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

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 15570 + ... + 16326.

Almost surely, 2^12072636 is an apocalyptic number.

It is an amenable number.

12072636 is an abundant number, since it is smaller than the sum of its proper divisors (18553596).

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

12072636 is a wasteful number, since it uses less digits than its factorization.

12072636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 12072636 is about 3474.5699014410. The cubic root of 12072636 is about 229.4038499648.

Adding to 12072636 its reverse (63627021), we get a palindrome (75699657).

The spelling of 12072636 in words is "twelve million, seventy-two thousand, six hundred thirty-six".