216423224 has 32 divisors (see below), whose sum is σ = 428610000. Its totient is φ = 102166272.

The previous prime is 216423223. The next prime is 216423227. The reversal of 216423224 is 422324612.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 216423193 and 216423202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216423223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45302 + ... + 49850.

Almost surely, 2^216423224 is an apocalyptic number.

It is an amenable number.

216423224 is a deficient number, since it is larger than the sum of its proper divisors (212186776).

216423224 is a wasteful number, since it uses less digits than its factorization.

216423224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4887 (or 4883 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 216423224 is about 14711.3297835376. The cubic root of 216423224 is about 600.3916184102.

Adding to 216423224 its reverse (422324612), we get a palindrome (638747836).

The spelling of 216423224 in words is "two hundred sixteen million, four hundred twenty-three thousand, two hundred twenty-four".