12281396 has 6 divisors (see below), whose sum is σ = 21492450. Its totient is φ = 6140696.

The previous prime is 12281389. The next prime is 12281407. The reversal of 12281396 is 69318221.

It can be written as a sum of positive squares in only one way, i.e., 10627600 + 1653796 = 3260^2 + 1286^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1535171 + ... + 1535178.

It is an arithmetic number, because the mean of its divisors is an integer number (3582075).

Almost surely, 2^12281396 is an apocalyptic number.

It is an amenable number.

12281396 is a deficient number, since it is larger than the sum of its proper divisors (9211054).

12281396 is a wasteful number, since it uses less digits than its factorization.

12281396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3070353 (or 3070351 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 12281396 is about 3504.4822727473. The cubic root of 12281396 is about 230.7185843613.

It can be divided in two parts, 122 and 81396, that added together give a palindrome (81518).

The spelling of 12281396 in words is "twelve million, two hundred eighty-one thousand, three hundred ninety-six".