12340538 has 32 divisors (see below), whose sum is σ = 23587200. Its totient is φ = 4713984.

The previous prime is 12340513. The next prime is 12340541. The reversal of 12340538 is 83504321.

It is a Curzon number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 3158 + ... + 5886.

It is an arithmetic number, because the mean of its divisors is an integer number (737100).

Almost surely, 2^12340538 is an apocalyptic number.

12340538 is a deficient number, since it is larger than the sum of its proper divisors (11246662).

12340538 is a wasteful number, since it uses less digits than its factorization.

12340538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 12340538 is about 3512.9101895722. The cubic root of 12340538 is about 231.0883391196.

Adding to 12340538 its reverse (83504321), we get a palindrome (95844859).

The spelling of 12340538 in words is "twelve million, three hundred forty thousand, five hundred thirty-eight".