12822641 has 12 divisors (see below), whose sum is σ = 14673372. Its totient is φ = 11136768.

The previous prime is 12822637. The next prime is 12822659. The reversal of 12822641 is 14622821.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1700416 + 11122225 = 1304^2 + 3335^2 .

It is not a de Polignac number, because 12822641 - 2² = 12822637 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 12822641.

It is not an unprimeable number, because it can be changed into a prime (12822631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2051 + ... + 5463.

It is an arithmetic number, because the mean of its divisors is an integer number (1222781).

Almost surely, 2^12822641 is an apocalyptic number.

It is an amenable number.

12822641 is a deficient number, since it is larger than the sum of its proper divisors (1850731).

12822641 is a wasteful number, since it uses less digits than its factorization.

12822641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460 (or 3443 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 12822641 is about 3580.8715419573. The cubic root of 12822641 is about 234.0592600783.

The spelling of 12822641 in words is "twelve million, eight hundred twenty-two thousand, six hundred forty-one".