12243766 has 4 divisors (see below), whose sum is σ = 18365652. Its totient is φ = 6121882.

The previous prime is 12243743. The next prime is 12243773. The reversal of 12243766 is 66734221.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060940 + ... + 3060943.

It is an arithmetic number, because the mean of its divisors is an integer number (4591413).

Almost surely, 2^12243766 is an apocalyptic number.

12243766 is a deficient number, since it is larger than the sum of its proper divisors (6121886).

12243766 is an equidigital number, since it uses as much as digits as its factorization.

12243766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6121885.

The product of its digits is 12096, while the sum is 31.

The square root of 12243766 is about 3499.1093152401. The cubic root of 12243766 is about 230.4827039407.

Adding to 12243766 its reverse (66734221), we get a palindrome (78977987).

The spelling of 12243766 in words is "twelve million, two hundred forty-three thousand, seven hundred sixty-six".