13322644 has 12 divisors (see below), whose sum is σ = 23697268. Its totient is φ = 6552000.

The previous prime is 13322633. The next prime is 13322651. The reversal of 13322644 is 44622331.

It can be written as a sum of positive squares in 2 ways, for example, as 448900 + 12873744 = 670^2 + 3588^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 27057 + ... + 27544.

Almost surely, 2^13322644 is an apocalyptic number.

It is an amenable number.

13322644 is a deficient number, since it is larger than the sum of its proper divisors (10374624).

13322644 is a wasteful number, since it uses less digits than its factorization.

13322644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54666 (or 54664 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 13322644 is about 3650.0197259741. The cubic root of 13322644 is about 237.0628353275.

Adding to 13322644 its reverse (44622331), we get a palindrome (57944975).

The spelling of 13322644 in words is "thirteen million, three hundred twenty-two thousand, six hundred forty-four".