243222406 has 32 divisors (see below), whose sum is σ = 427638528. Its totient is φ = 101593440.

The previous prime is 243222403. The next prime is 243222407. The reversal of 243222406 is 604222342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243222403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119941 + ... + 121951.

It is an arithmetic number, because the mean of its divisors is an integer number (13363704).

Almost surely, 2^243222406 is an apocalyptic number.

243222406 is a deficient number, since it is larger than the sum of its proper divisors (184416122).

243222406 is a wasteful number, since it uses less digits than its factorization.

243222406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 243222406 is about 15595.5893123665. The cubic root of 243222406 is about 624.2154687492.

Adding to 243222406 its reverse (604222342), we get a palindrome (847444748).

The spelling of 243222406 in words is "two hundred forty-three million, two hundred twenty-two thousand, four hundred six".