13315438 has 8 divisors (see below), whose sum is σ = 19989432. Its totient is φ = 6652296.

The previous prime is 13315387. The next prime is 13315439. The reversal of 13315438 is 83451331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13315439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1981 + ... + 5527.

It is an arithmetic number, because the mean of its divisors is an integer number (2498679).

Almost surely, 2^13315438 is an apocalyptic number.

13315438 is a deficient number, since it is larger than the sum of its proper divisors (6673994).

13315438 is a wasteful number, since it uses less digits than its factorization.

13315438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5426.

The product of its digits is 4320, while the sum is 28.

The square root of 13315438 is about 3649.0324745061. The cubic root of 13315438 is about 237.0200864838.

Adding to 13315438 its reverse (83451331), we get a palindrome (96766769).

The spelling of 13315438 in words is "thirteen million, three hundred fifteen thousand, four hundred thirty-eight".