13138378 has 16 divisors (see below), whose sum is σ = 21614400. Its totient is φ = 5940000.

The previous prime is 13138369. The next prime is 13138379. The reversal of 13138378 is 87383131.

13138378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13138379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2878 + ... + 5878.

It is an arithmetic number, because the mean of its divisors is an integer number (1350900).

Almost surely, 2^13138378 is an apocalyptic number.

13138378 is a deficient number, since it is larger than the sum of its proper divisors (8476022).

13138378 is a wasteful number, since it uses less digits than its factorization.

13138378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213.

The product of its digits is 12096, while the sum is 34.

The square root of 13138378 is about 3624.6900557151. The cubic root of 13138378 is about 235.9648156875.

The spelling of 13138378 in words is "thirteen million, one hundred thirty-eight thousand, three hundred seventy-eight".