220206818 has 32 divisors (see below), whose sum is σ = 366291072. Its totient is φ = 98640000.

The previous prime is 220206809. The next prime is 220206839. The reversal of 220206818 is 818602022.

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 15 ways as a sum of consecutive naturals, for example, 267155 + ... + 267977.

It is an arithmetic number, because the mean of its divisors is an integer number (11446596).

Almost surely, 2^220206818 is an apocalyptic number.

220206818 is a deficient number, since it is larger than the sum of its proper divisors (146084254).

220206818 is a wasteful number, since it uses less digits than its factorization.

220206818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 220206818 is about 14839.3671697953. The cubic root of 220206818 is about 603.8701842994.

The spelling of 220206818 in words is "two hundred twenty million, two hundred six thousand, eight hundred eighteen".