13426438 has 4 divisors (see below), whose sum is σ = 20139660. Its totient is φ = 6713218.

The previous prime is 13426433. The next prime is 13426477. The reversal of 13426438 is 83462431.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13426433) by changing a digit.

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 as a sum of consecutive naturals, namely, 3356608 + ... + 3356611.

It is an arithmetic number, because the mean of its divisors is an integer number (5034915).

Almost surely, 2^13426438 is an apocalyptic number.

13426438 is a deficient number, since it is larger than the sum of its proper divisors (6713222).

13426438 is an equidigital number, since it uses as much as digits as its factorization.

13426438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6713221.

The product of its digits is 13824, while the sum is 31.

The square root of 13426438 is about 3664.2104197221. The cubic root of 13426438 is about 237.6768795003.

Adding to 13426438 its reverse (83462431), we get a palindrome (96888869).

The spelling of 13426438 in words is "thirteen million, four hundred twenty-six thousand, four hundred thirty-eight".