12818446 has 4 divisors (see below), whose sum is σ = 19227672. Its totient is φ = 6409222.

The previous prime is 12818431. The next prime is 12818447. The reversal of 12818446 is 64481821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64481821 = 2801 ⋅23021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12818447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3204610 + ... + 3204613.

It is an arithmetic number, because the mean of its divisors is an integer number (4806918).

Almost surely, 2^12818446 is an apocalyptic number.

12818446 is a deficient number, since it is larger than the sum of its proper divisors (6409226).

12818446 is an equidigital number, since it uses as much as digits as its factorization.

12818446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6409225.

The product of its digits is 12288, while the sum is 34.

The square root of 12818446 is about 3580.2857427865. The cubic root of 12818446 is about 234.0337326878.

The spelling of 12818446 in words is "twelve million, eight hundred eighteen thousand, four hundred forty-six".