12009726 has 24 divisors (see below), whose sum is σ = 27153360. Its totient is φ = 3829056.

The previous prime is 12009707. The next prime is 12009727. The reversal of 12009726 is 62790021.

It is a self number, because there is not a number n which added to its sum of digits gives 12009726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12009727) 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, 14091 + ... + 14918.

It is an arithmetic number, because the mean of its divisors is an integer number (1131390).

Almost surely, 2^12009726 is an apocalyptic number.

12009726 is an abundant number, since it is smaller than the sum of its proper divisors (15143634).

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

12009726 is a wasteful number, since it uses less digits than its factorization.

12009726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29040 (or 29037 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 12009726 is about 3465.5051579820. The cubic root of 12009726 is about 229.0046845339.

Adding to 12009726 its reverse (62790021), we get a palindrome (74799747).

The spelling of 12009726 in words is "twelve million, nine thousand, seven hundred twenty-six".