12244138 has 8 divisors (see below), whose sum is σ = 18389700. Its totient is φ = 6114240.

The previous prime is 12244109. The next prime is 12244139. The reversal of 12244138 is 83144221.

It can be written as a sum of positive squares in 2 ways, for example, as 12229009 + 15129 = 3497^2 + 123^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12244139) 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 3 ways as a sum of consecutive naturals, for example, 1713 + ... + 5236.

Almost surely, 2^12244138 is an apocalyptic number.

12244138 is a deficient number, since it is larger than the sum of its proper divisors (6145562).

12244138 is an equidigital number, since it uses as much as digits as its factorization.

12244138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7832.

The product of its digits is 1536, while the sum is 25.

The square root of 12244138 is about 3499.1624712208. The cubic root of 12244138 is about 230.4850381544.

Adding to 12244138 its reverse (83144221), we get a palindrome (95388359).

The spelling of 12244138 in words is "twelve million, two hundred forty-four thousand, one hundred thirty-eight".