13938506 has 8 divisors (see below), whose sum is σ = 21816864. Its totient is φ = 6666220.

The previous prime is 13938497. The next prime is 13938511. The reversal of 13938506 is 60583931.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 151460 + ... + 151551.

It is an arithmetic number, because the mean of its divisors is an integer number (2727108).

Almost surely, 2^13938506 is an apocalyptic number.

13938506 is a deficient number, since it is larger than the sum of its proper divisors (7878358).

13938506 is a wasteful number, since it uses less digits than its factorization.

13938506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303036.

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

The square root of 13938506 is about 3733.4308618213. The cubic root of 13938506 is about 240.6608292293.

The spelling of 13938506 in words is "thirteen million, nine hundred thirty-eight thousand, five hundred six".