13378538 has 8 divisors (see below), whose sum is σ = 20116740. Its totient is φ = 6672960.

The previous prime is 13378523. The next prime is 13378543. The reversal of 13378538 is 83587331.

It is a happy number.

13378538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10220809 + 3157729 = 3197^2 + 1777^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7103 + ... + 8786.

Almost surely, 2^13378538 is an apocalyptic number.

13378538 is a deficient number, since it is larger than the sum of its proper divisors (6738202).

13378538 is a wasteful number, since it uses less digits than its factorization.

13378538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16312.

The product of its digits is 60480, while the sum is 38.

The square root of 13378538 is about 3657.6683830003. The cubic root of 13378538 is about 237.3938983131.

The spelling of 13378538 in words is "thirteen million, three hundred seventy-eight thousand, five hundred thirty-eight".