12726823 has 4 divisors (see below), whose sum is σ = 12749760. Its totient is φ = 12703888.

The previous prime is 12726817. The next prime is 12726841. The reversal of 12726823 is 32862721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32862721 = 2887 ⋅11383.

It is a cyclic number.

It is not a de Polignac number, because 12726823 - 2¹³ = 12718631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12726803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10615 + ... + 11752.

It is an arithmetic number, because the mean of its divisors is an integer number (3187440).

Almost surely, 2^12726823 is an apocalyptic number.

12726823 is a deficient number, since it is larger than the sum of its proper divisors (22937).

12726823 is an equidigital number, since it uses as much as digits as its factorization.

12726823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22936.

The product of its digits is 8064, while the sum is 31.

The square root of 12726823 is about 3567.4673088902. The cubic root of 12726823 is about 233.4747942658.

The spelling of 12726823 in words is "twelve million, seven hundred twenty-six thousand, eight hundred twenty-three".