16218008 has 16 divisors (see below), whose sum is σ = 31056480. Its totient is φ = 7936288.

The previous prime is 16217987. The next prime is 16218019. The reversal of 16218008 is 80081261.

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, 21191 + ... + 21942.

It is an arithmetic number, because the mean of its divisors is an integer number (1941030).

Almost surely, 2^16218008 is an apocalyptic number.

It is an amenable number.

16218008 is a deficient number, since it is larger than the sum of its proper divisors (14838472).

16218008 is a wasteful number, since it uses less digits than its factorization.

16218008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43186 (or 43182 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 16218008 is about 4027.1587999482. The cubic root of 16218008 is about 253.1235212635.

Adding to 16218008 its reverse (80081261), we get a palindrome (96299269).

The spelling of 16218008 in words is "sixteen million, two hundred eighteen thousand, eight".