13240238 has 16 divisors (see below), whose sum is σ = 21879936. Its totient is φ = 5958840.

The previous prime is 13240231. The next prime is 13240291. The reversal of 13240238 is 83204231.

13240238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13240231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656 + ... + 5187.

It is an arithmetic number, because the mean of its divisors is an integer number (1367496).

Almost surely, 2^13240238 is an apocalyptic number.

13240238 is a deficient number, since it is larger than the sum of its proper divisors (8639698).

13240238 is a wasteful number, since it uses less digits than its factorization.

13240238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 13240238 is about 3638.7137837428. The cubic root of 13240238 is about 236.5730472360.

Adding to 13240238 its reverse (83204231), we get a palindrome (96444469).

The spelling of 13240238 in words is "thirteen million, two hundred forty thousand, two hundred thirty-eight".