12305826 has 48 divisors (see below), whose sum is σ = 29405376. Its totient is φ = 3695328.

The previous prime is 12305803. The next prime is 12305827. The reversal of 12305826 is 62850321.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12305826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12305827) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 9451 + ... + 10673.

It is an arithmetic number, because the mean of its divisors is an integer number (612612).

Almost surely, 2^12305826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12305826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14702688).

12305826 is an abundant number, since it is smaller than the sum of its proper divisors (17099550).

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

12305826 is a wasteful number, since it uses less digits than its factorization.

12305826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 12305826 is about 3507.9660773730. The cubic root of 12305826 is about 230.8714638825.

It can be divided in two parts, 12305 and 826, that added together give a palindrome (13131).

The spelling of 12305826 in words is "twelve million, three hundred five thousand, eight hundred twenty-six".