12406626 has 12 divisors (see below), whose sum is σ = 26881062. Its totient is φ = 4135536.

The previous prime is 12406621. The next prime is 12406627. The reversal of 12406626 is 62660421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8208225 + 4198401 = 2865^2 + 2049^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12406626.

It is not an unprimeable number, because it can be changed into a prime (12406621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 344611 + ... + 344646.

Almost surely, 2^12406626 is an apocalyptic number.

12406626 is an abundant number, since it is smaller than the sum of its proper divisors (14474436).

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

12406626 is a wasteful number, since it uses less digits than its factorization.

12406626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689265 (or 689262 counting only the distinct ones).

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

The square root of 12406626 is about 3522.3040754597. The cubic root of 12406626 is about 231.5001251735.

The spelling of 12406626 in words is "twelve million, four hundred six thousand, six hundred twenty-six".