220885818 has 8 divisors (see below), whose sum is σ = 441771648. Its totient is φ = 73628604.

The previous prime is 220885799. The next prime is 220885823. The reversal of 220885818 is 818588022.

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

220885818 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 220885818.

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, 18407146 + ... + 18407157.

It is an arithmetic number, because the mean of its divisors is an integer number (55221456).

Almost surely, 2^220885818 is an apocalyptic number.

220885818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

220885818 is a wasteful number, since it uses less digits than its factorization.

220885818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36814308.

The product of its (nonzero) digits is 81920, while the sum is 42.

The square root of 220885818 is about 14862.2278949019. The cubic root of 220885818 is about 604.4902182957.

The spelling of 220885818 in words is "two hundred twenty million, eight hundred eighty-five thousand, eight hundred eighteen".