12744205 has 8 divisors (see below), whose sum is σ = 15322104. Its totient is φ = 10176000.

The previous prime is 12744187. The next prime is 12744209. The reversal of 12744205 is 50244721.

It can be written as a sum of positive squares in 4 ways, for example, as 7070281 + 5673924 = 2659^2 + 2382^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12744205 - 2⁷ = 12744077 is a prime.

It is a super-2 number, since 2×12744205² = 324829522164050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12744205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12744209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885 + ... + 5125.

It is an arithmetic number, because the mean of its divisors is an integer number (1915263).

Almost surely, 2^12744205 is an apocalyptic number.

It is an amenable number.

12744205 is a deficient number, since it is larger than the sum of its proper divisors (2577899).

12744205 is an equidigital number, since it uses as much as digits as its factorization.

12744205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4847.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 12744205 is about 3569.9026597374. The cubic root of 12744205 is about 233.5810374006.

Adding to 12744205 its reverse (50244721), we get a palindrome (62988926).

The spelling of 12744205 in words is "twelve million, seven hundred forty-four thousand, two hundred five".