216822814 has 8 divisors (see below), whose sum is σ = 350252280. Its totient is φ = 100072056.

The previous prime is 216822791. The next prime is 216822829. The reversal of 216822814 is 418228612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 216822814.

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, 4169644 + ... + 4169695.

It is an arithmetic number, because the mean of its divisors is an integer number (43781535).

Almost surely, 2^216822814 is an apocalyptic number.

216822814 is a deficient number, since it is larger than the sum of its proper divisors (133429466).

216822814 is a wasteful number, since it uses less digits than its factorization.

216822814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8339354.

The product of its digits is 12288, while the sum is 34.

The square root of 216822814 is about 14724.9045497755. The cubic root of 216822814 is about 600.7608994603.

The spelling of 216822814 in words is "two hundred sixteen million, eight hundred twenty-two thousand, eight hundred fourteen".