13878603 has 12 divisors (see below), whose sum is σ = 20121400. Its totient is φ = 9218016.

The previous prime is 13878563. The next prime is 13878619. The reversal of 13878603 is 30687831.

It is not a de Polignac number, because 13878603 - 2⁹ = 13878091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13878653) 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 in 11 ways as a sum of consecutive naturals, for example, 178 + ... + 5271.

Almost surely, 2^13878603 is an apocalyptic number.

13878603 is a deficient number, since it is larger than the sum of its proper divisors (6242797).

13878603 is a wasteful number, since it uses less digits than its factorization.

13878603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5738 (or 5735 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 13878603 is about 3725.3997100982. The cubic root of 13878603 is about 240.3155744546.

The spelling of 13878603 in words is "thirteen million, eight hundred seventy-eight thousand, six hundred three".