13906538 has 8 divisors (see below), whose sum is σ = 21532800. Its totient is φ = 6728940.

The previous prime is 13906531. The next prime is 13906553. The reversal of 13906538 is 83560931.

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 = 13906498 and 13906507.

It is not an unprimeable number, because it can be changed into a prime (13906531) by changing a digit.

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, 112088 + ... + 112211.

It is an arithmetic number, because the mean of its divisors is an integer number (2691600).

Almost surely, 2^13906538 is an apocalyptic number.

13906538 is a deficient number, since it is larger than the sum of its proper divisors (7626262).

13906538 is a wasteful number, since it uses less digits than its factorization.

13906538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224332.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 13906538 is about 3729.1470874719. The cubic root of 13906538 is about 240.4767029789.

The spelling of 13906538 in words is "thirteen million, nine hundred six thousand, five hundred thirty-eight".