16918216 has 16 divisors (see below), whose sum is σ = 36253440. Its totient is φ = 7250640.

The previous prime is 16918211. The next prime is 16918229. The reversal of 16918216 is 61281961.

It is not an unprimeable number, because it can be changed into a prime (16918211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151000 + ... + 151111.

It is an arithmetic number, because the mean of its divisors is an integer number (2265840).

Almost surely, 2^16918216 is an apocalyptic number.

It is an amenable number.

16918216 is an abundant number, since it is smaller than the sum of its proper divisors (19335224).

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

16918216 is a wasteful number, since it uses less digits than its factorization.

16918216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302124 (or 302120 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 16918216 is about 4113.1759019035. The cubic root of 16918216 is about 256.7151633403.

The spelling of 16918216 in words is "sixteen million, nine hundred eighteen thousand, two hundred sixteen".