13438538 has 8 divisors (see below), whose sum is σ = 20229888. Its totient is φ = 6695244.

The previous prime is 13438507. The next prime is 13438541. The reversal of 13438538 is 83583431.

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

It is a junction number, because it is equal to n+sod(n) for n = 13438498 and 13438507.

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, 11306 + ... + 12437.

It is an arithmetic number, because the mean of its divisors is an integer number (2528736).

Almost surely, 2^13438538 is an apocalyptic number.

13438538 is a deficient number, since it is larger than the sum of its proper divisors (6791350).

13438538 is a wasteful number, since it uses less digits than its factorization.

13438538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24028.

The product of its digits is 34560, while the sum is 35.

The square root of 13438538 is about 3665.8611539446. The cubic root of 13438538 is about 237.7482567524.

The spelling of 13438538 in words is "thirteen million, four hundred thirty-eight thousand, five hundred thirty-eight".