12822813 has 16 divisors (see below), whose sum is σ = 19267200. Its totient is φ = 8426880.

The previous prime is 12822787. The next prime is 12822827. The reversal of 12822813 is 31822821.

12822813 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12822813 - 2⁵ = 12822781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12822863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1428 + ... + 5261.

It is an arithmetic number, because the mean of its divisors is an integer number (1204200).

Almost surely, 2^12822813 is an apocalyptic number.

It is an amenable number.

12822813 is a deficient number, since it is larger than the sum of its proper divisors (6444387).

12822813 is an equidigital number, since it uses as much as digits as its factorization.

12822813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6769 (or 6763 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 12822813 is about 3580.8955583764. The cubic root of 12822813 is about 234.0603066129.

It can be divided in two parts, 1282 and 2813, that added together give a triangular number (4095 = T₉₀).

The spelling of 12822813 in words is "twelve million, eight hundred twenty-two thousand, eight hundred thirteen".