12287426 has 4 divisors (see below), whose sum is σ = 18431142. Its totient is φ = 6143712.

The previous prime is 12287419. The next prime is 12287437. The reversal of 12287426 is 62478221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12285025 + 2401 = 3505^2 + 49^2 .

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 12287392 and 12287401.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3071855 + ... + 3071858.

Almost surely, 2^12287426 is an apocalyptic number.

12287426 is a deficient number, since it is larger than the sum of its proper divisors (6143716).

12287426 is an equidigital number, since it uses as much as digits as its factorization.

12287426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6143715.

The product of its digits is 10752, while the sum is 32.

The square root of 12287426 is about 3505.3424939655. The cubic root of 12287426 is about 230.7563380888.

The spelling of 12287426 in words is "twelve million, two hundred eighty-seven thousand, four hundred twenty-six".