13140238 has 8 divisors (see below), whose sum is σ = 19819800. Its totient is φ = 6533640.

The previous prime is 13140221. The next prime is 13140271. The reversal of 13140238 is 83204131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17788 + ... + 18511.

It is an arithmetic number, because the mean of its divisors is an integer number (2477475).

Almost surely, 2^13140238 is an apocalyptic number.

13140238 is a deficient number, since it is larger than the sum of its proper divisors (6679562).

13140238 is a wasteful number, since it uses less digits than its factorization.

13140238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36482.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 13140238 is about 3624.9466202966. The cubic root of 13140238 is about 235.9759503406.

Adding to 13140238 its reverse (83204131), we get a palindrome (96344369).

The spelling of 13140238 in words is "thirteen million, one hundred forty thousand, two hundred thirty-eight".