12206438 has 8 divisors (see below), whose sum is σ = 18756360. Its totient is φ = 5954320.

The previous prime is 12206437. The next prime is 12206473. The reversal of 12206438 is 83460221.

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 (12206437) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 74348 + ... + 74511.

It is an arithmetic number, because the mean of its divisors is an integer number (2344545).

Almost surely, 2^12206438 is an apocalyptic number.

12206438 is a deficient number, since it is larger than the sum of its proper divisors (6549922).

12206438 is a wasteful number, since it uses less digits than its factorization.

12206438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148902.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 12206438 is about 3493.7713147829. The cubic root of 12206438 is about 230.2482385964.

Adding to 12206438 its reverse (83460221), we get a palindrome (95666659).

The spelling of 12206438 in words is "twelve million, two hundred six thousand, four hundred thirty-eight".