12208406 has 16 divisors (see below), whose sum is σ = 21440160. Its totient is φ = 5104320.

The previous prime is 12208381. The next prime is 12208411. The reversal of 12208406 is 60480221.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10061 + ... + 11208.

It is an arithmetic number, because the mean of its divisors is an integer number (1340010).

Almost surely, 2^12208406 is an apocalyptic number.

12208406 is a deficient number, since it is larger than the sum of its proper divisors (9231754).

12208406 is a wasteful number, since it uses less digits than its factorization.

12208406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21319.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 12208406 is about 3494.0529475095. The cubic root of 12208406 is about 230.2606119626.

Adding to 12208406 its reverse (60480221), we get a palindrome (72688627).

The spelling of 12208406 in words is "twelve million, two hundred eight thousand, four hundred six".