22006216 has 32 divisors (see below), whose sum is σ = 43344000. Its totient is φ = 10454400.

The previous prime is 22006207. The next prime is 22006223. The reversal of 22006216 is 61260022.

It is a junction number, because it is equal to n+sod(n) for n = 22006193 and 22006202.

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 7 ways as a sum of consecutive naturals, for example, 36316 + ... + 36916.

It is an arithmetic number, because the mean of its divisors is an integer number (1354500).

Almost surely, 2^22006216 is an apocalyptic number.

It is an amenable number.

22006216 is a deficient number, since it is larger than the sum of its proper divisors (21337784).

22006216 is a wasteful number, since it uses less digits than its factorization.

22006216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 22006216 is about 4691.0783408509. The cubic root of 22006216 is about 280.2303206963.

Adding to 22006216 its reverse (61260022), we get a palindrome (83266238).

It can be divided in two parts, 22006 and 216, that added together give a palindrome (22222).

The spelling of 22006216 in words is "twenty-two million, six thousand, two hundred sixteen".