13857538 has 8 divisors (see below), whose sum is σ = 20854080. Its totient is φ = 6906180.

The previous prime is 13857521. The next prime is 13857551. The reversal of 13857538 is 83575831.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13857538.

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, 10518 + ... + 11761.

It is an arithmetic number, because the mean of its divisors is an integer number (2606760).

Almost surely, 2^13857538 is an apocalyptic number.

13857538 is a deficient number, since it is larger than the sum of its proper divisors (6996542).

13857538 is a wasteful number, since it uses less digits than its factorization.

13857538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22592.

The product of its digits is 100800, while the sum is 40.

The square root of 13857538 is about 3722.5714230892. The cubic root of 13857538 is about 240.1939289042.

The spelling of 13857538 in words is "thirteen million, eight hundred fifty-seven thousand, five hundred thirty-eight".