22216916 has 12 divisors (see below), whose sum is σ = 39828180. Its totient is φ = 10837440.

The previous prime is 22216903. The next prime is 22216921. The reversal of 22216916 is 61961222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3984016 + 18232900 = 1996^2 + 4270^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67571 + ... + 67898.

It is an arithmetic number, because the mean of its divisors is an integer number (3319015).

Almost surely, 2^22216916 is an apocalyptic number.

It is an amenable number.

22216916 is a deficient number, since it is larger than the sum of its proper divisors (17611264).

22216916 is a wasteful number, since it uses less digits than its factorization.

22216916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135514 (or 135512 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 22216916 is about 4713.4823644520. The cubic root of 22216916 is about 281.1218427802.

It can be divided in two parts, 22216 and 916, that added together give a palindrome (23132).

The spelling of 22216916 in words is "twenty-two million, two hundred sixteen thousand, nine hundred sixteen".