168216008 has 32 divisors (see below), whose sum is σ = 333244800. Its totient is φ = 79474752.

The previous prime is 168215977. The next prime is 168216019. The reversal of 168216008 is 800612861.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3191 + ... + 18617.

It is an arithmetic number, because the mean of its divisors is an integer number (10413900).

Almost surely, 2^168216008 is an apocalyptic number.

It is an amenable number.

168216008 is a deficient number, since it is larger than the sum of its proper divisors (165028792).

168216008 is a wasteful number, since it uses less digits than its factorization.

168216008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15509 (or 15505 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 168216008 is about 12969.8114095772. The cubic root of 168216008 is about 552.0212219664.

Adding to 168216008 its reverse (800612861), we get a palindrome (968828869).

The spelling of 168216008 in words is "one hundred sixty-eight million, two hundred sixteen thousand, eight".