216797318 has 16 divisors (see below), whose sum is σ = 327873744. Its totient is φ = 107509920.

The previous prime is 216797279. The next prime is 216797341. The reversal of 216797318 is 813797612.

It is a congruent number.

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, 165221 + ... + 166527.

It is an arithmetic number, because the mean of its divisors is an integer number (20492109).

Almost surely, 2^216797318 is an apocalyptic number.

216797318 is a deficient number, since it is larger than the sum of its proper divisors (111076426).

216797318 is a wasteful number, since it uses less digits than its factorization.

216797318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927.

The product of its digits is 127008, while the sum is 44.

The square root of 216797318 is about 14724.0387801717. The cubic root of 216797318 is about 600.7373508923.

The spelling of 216797318 in words is "two hundred sixteen million, seven hundred ninety-seven thousand, three hundred eighteen".