13393238 has 4 divisors (see below), whose sum is σ = 20089860. Its totient is φ = 6696618.

The previous prime is 13393231. The next prime is 13393267. The reversal of 13393238 is 83239331.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13393231) by changing a digit.

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 as a sum of consecutive naturals, namely, 3348308 + ... + 3348311.

It is an arithmetic number, because the mean of its divisors is an integer number (5022465).

Almost surely, 2^13393238 is an apocalyptic number.

13393238 is a deficient number, since it is larger than the sum of its proper divisors (6696622).

13393238 is an equidigital number, since it uses as much as digits as its factorization.

13393238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6696621.

The product of its digits is 11664, while the sum is 32.

The square root of 13393238 is about 3659.6773081790. The cubic root of 13393238 is about 237.4808139626.

It can be divided in two parts, 1339323 and 8, that added together give a palindrome (1339331).

The spelling of 13393238 in words is "thirteen million, three hundred ninety-three thousand, two hundred thirty-eight".