13320138 has 32 divisors (see below), whose sum is σ = 28828800. Its totient is φ = 4078656.

The previous prime is 13320113. The next prime is 13320157. The reversal of 13320138 is 83102331.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30123 + ... + 30561.

It is an arithmetic number, because the mean of its divisors is an integer number (900900).

Almost surely, 2^13320138 is an apocalyptic number.

13320138 is an abundant number, since it is smaller than the sum of its proper divisors (15508662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13320138 is a wasteful number, since it uses less digits than its factorization.

13320138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 13320138 is about 3649.6764240135. The cubic root of 13320138 is about 237.0479704924.

Adding to 13320138 its reverse (83102331), we get a palindrome (96422469).

The spelling of 13320138 in words is "thirteen million, three hundred twenty thousand, one hundred thirty-eight".