12009238 has 8 divisors (see below), whose sum is σ = 18500832. Its totient is φ = 5842296.

The previous prime is 12009233. The next prime is 12009329. The reversal of 12009238 is 83290021.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12009233) 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, 81070 + ... + 81217.

It is an arithmetic number, because the mean of its divisors is an integer number (2312604).

Almost surely, 2^12009238 is an apocalyptic number.

12009238 is a deficient number, since it is larger than the sum of its proper divisors (6491594).

12009238 is a wasteful number, since it uses less digits than its factorization.

12009238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162326.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 12009238 is about 3465.4347490611. The cubic root of 12009238 is about 229.0015827201.

Adding to 12009238 its reverse (83290021), we get a palindrome (95299259).

The spelling of 12009238 in words is "twelve million, nine thousand, two hundred thirty-eight".