13321438 has 16 divisors (see below), whose sum is σ = 22785840. Its totient is φ = 5786496.

The previous prime is 13321403. The next prime is 13321447. The reversal of 13321438 is 83412331.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14628 + ... + 15511.

It is an arithmetic number, because the mean of its divisors is an integer number (1424115).

Almost surely, 2^13321438 is an apocalyptic number.

13321438 is a deficient number, since it is larger than the sum of its proper divisors (9464402).

13321438 is a wasteful number, since it uses less digits than its factorization.

13321438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30171.

The product of its digits is 1728, while the sum is 25.

The square root of 13321438 is about 3649.8545176486. The cubic root of 13321438 is about 237.0556819324.

Adding to 13321438 its reverse (83412331), we get a palindrome (96733769).

The spelling of 13321438 in words is "thirteen million, three hundred twenty-one thousand, four hundred thirty-eight".