218322822 has 16 divisors (see below), whose sum is σ = 437193792. Its totient is φ = 72682920.

The previous prime is 218322803. The next prime is 218322851. The reversal of 218322822 is 228223812.

It is a self number, because there is not a number n which added to its sum of digits gives 218322822.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17568 + ... + 27299.

It is an arithmetic number, because the mean of its divisors is an integer number (27324612).

Almost surely, 2^218322822 is an apocalyptic number.

218322822 is an abundant number, since it is smaller than the sum of its proper divisors (218870970).

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

218322822 is a wasteful number, since it uses less digits than its factorization.

218322822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45683.

The product of its digits is 6144, while the sum is 30.

The square root of 218322822 is about 14775.7511484188. The cubic root of 218322822 is about 602.1430972211.

The spelling of 218322822 in words is "two hundred eighteen million, three hundred twenty-two thousand, eight hundred twenty-two".