12406636 has 24 divisors (see below), whose sum is σ = 23775696. Its totient is φ = 5617920.

The previous prime is 12406633. The next prime is 12406649. The reversal of 12406636 is 63660421.

It is not an unprimeable number, because it can be changed into a prime (12406631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19800 + ... + 20416.

It is an arithmetic number, because the mean of its divisors is an integer number (990654).

Almost surely, 2^12406636 is an apocalyptic number.

It is an amenable number.

12406636 is a deficient number, since it is larger than the sum of its proper divisors (11369060).

12406636 is a wasteful number, since it uses less digits than its factorization.

12406636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089 (or 1087 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 12406636 is about 3522.3054949848. The cubic root of 12406636 is about 231.5001873715.

The spelling of 12406636 in words is "twelve million, four hundred six thousand, six hundred thirty-six".