12827813 has 4 divisors (see below), whose sum is σ = 13385568. Its totient is φ = 12270060.

The previous prime is 12827807. The next prime is 12827821. The reversal of 12827813 is 31872821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31872821 = 4127 ⋅7723.

It is a cyclic number.

It is not a de Polignac number, because 12827813 - 2⁴ = 12827797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12827813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12827513) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 278843 + ... + 278888.

It is an arithmetic number, because the mean of its divisors is an integer number (3346392).

Almost surely, 2^12827813 is an apocalyptic number.

It is an amenable number.

12827813 is a deficient number, since it is larger than the sum of its proper divisors (557755).

12827813 is an equidigital number, since it uses as much as digits as its factorization.

12827813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557754.

The product of its digits is 5376, while the sum is 32.

The square root of 12827813 is about 3581.5936397084. The cubic root of 12827813 is about 234.0907250412.

The spelling of 12827813 in words is "twelve million, eight hundred twenty-seven thousand, eight hundred thirteen".