16716216 has 64 divisors (see below), whose sum is σ = 47589120. Its totient is φ = 4843520.

The previous prime is 16716191. The next prime is 16716221. The reversal of 16716216 is 61261761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4696 + ... + 7448.

It is an arithmetic number, because the mean of its divisors is an integer number (743580).

Almost surely, 2^16716216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16716216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23794560).

16716216 is an abundant number, since it is smaller than the sum of its proper divisors (30872904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16716216 is a wasteful number, since it uses less digits than its factorization.

16716216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796 (or 2792 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 16716216 is about 4088.5469301452. The cubic root of 16716216 is about 255.6893611688.

Adding to 16716216 its reverse (61261761), we get a palindrome (77977977).

It can be divided in two parts, 1671 and 6216, that added together give a palindrome (7887).

The spelling of 16716216 in words is "sixteen million, seven hundred sixteen thousand, two hundred sixteen".