13213438 has 24 divisors (see below), whose sum is σ = 23384592. Its totient is φ = 5582304.

The previous prime is 13213423. The next prime is 13213441. The reversal of 13213438 is 83431231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6231 + ... + 8077.

It is an arithmetic number, because the mean of its divisors is an integer number (974358).

Almost surely, 2^13213438 is an apocalyptic number.

13213438 is a deficient number, since it is larger than the sum of its proper divisors (10171154).

13213438 is a wasteful number, since it uses less digits than its factorization.

13213438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936 (or 1929 counting only the distinct ones).

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

The square root of 13213438 is about 3635.0292983689. The cubic root of 13213438 is about 236.4133209970.

Adding to 13213438 its reverse (83431231), we get a palindrome (96644669).

The spelling of 13213438 in words is "thirteen million, two hundred thirteen thousand, four hundred thirty-eight".