12245247 has 18 divisors (see below), whose sum is σ = 20576088. Its totient is φ = 6997032.

The previous prime is 12245209. The next prime is 12245249. The reversal of 12245247 is 74254221.

It is not a de Polignac number, because 12245247 - 2⁷ = 12245119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12245247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12245249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13443 + ... + 14324.

It is an arithmetic number, because the mean of its divisors is an integer number (1143116).

Almost surely, 2^12245247 is an apocalyptic number.

12245247 is a deficient number, since it is larger than the sum of its proper divisors (8330841).

12245247 is a wasteful number, since it uses less digits than its factorization.

12245247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27787 (or 27777 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 12245247 is about 3499.3209341242. The cubic root of 12245247 is about 230.4919965914.

Adding to 12245247 its reverse (74254221), we get a palindrome (86499468).

It can be divided in two parts, 122 and 45247, that added together give a square (45369 = 213²).

The spelling of 12245247 in words is "twelve million, two hundred forty-five thousand, two hundred forty-seven".