13330138 has 8 divisors (see below), whose sum is σ = 20535732. Its totient is φ = 6484896.

The previous prime is 13330127. The next prime is 13330139. The reversal of 13330138 is 83103331.

It can be written as a sum of positive squares in 2 ways, for example, as 9381969 + 3948169 = 3063^2 + 1987^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13330139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89995 + ... + 90142.

Almost surely, 2^13330138 is an apocalyptic number.

13330138 is a deficient number, since it is larger than the sum of its proper divisors (7205594).

13330138 is a wasteful number, since it uses less digits than its factorization.

13330138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180176.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 13330138 is about 3651.0461514476. The cubic root of 13330138 is about 237.1072763531.

Adding to 13330138 its reverse (83103331), we get a palindrome (96433469).

The spelling of 13330138 in words is "thirteen million, three hundred thirty thousand, one hundred thirty-eight".