12205446 has 32 divisors (see below), whose sum is σ = 26908416. Its totient is φ = 3660000.

The previous prime is 12205441. The next prime is 12205447. The reversal of 12205446 is 64450221.

It is a plaindrome in base 15.

It is a zygodrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12205441) 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 15 ways as a sum of consecutive naturals, for example, 5751 + ... + 7581.

It is an arithmetic number, because the mean of its divisors is an integer number (840888).

Almost surely, 2^12205446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12205446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13454208).

12205446 is an abundant number, since it is smaller than the sum of its proper divisors (14702970).

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

12205446 is a wasteful number, since it uses less digits than its factorization.

12205446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 12205446 is about 3493.6293449649. The cubic root of 12205446 is about 230.2420011109.

Adding to 12205446 its reverse (64450221), we get a palindrome (76655667).

It can be divided in two parts, 1220 and 5446, that added together give a palindrome (6666).

The spelling of 12205446 in words is "twelve million, two hundred five thousand, four hundred forty-six".