13320238 has 4 divisors (see below), whose sum is σ = 19980360. Its totient is φ = 6660118.

The previous prime is 13320233. The next prime is 13320247. The reversal of 13320238 is 83202331.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3330058 + ... + 3330061.

It is an arithmetic number, because the mean of its divisors is an integer number (4995090).

Almost surely, 2^13320238 is an apocalyptic number.

13320238 is a deficient number, since it is larger than the sum of its proper divisors (6660122).

13320238 is an equidigital number, since it uses as much as digits as its factorization.

13320238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660121.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 13320238 is about 3649.6901238324. The cubic root of 13320238 is about 237.0485636979.

Adding to 13320238 its reverse (83202331), we get a palindrome (96522569).

The spelling of 13320238 in words is "thirteen million, three hundred twenty thousand, two hundred thirty-eight".