220394418 has 32 divisors (see below), whose sum is σ = 460864512. Its totient is φ = 70131600.

The previous prime is 220394417. The next prime is 220394429. The reversal of 220394418 is 814493022.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220394411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85813 + ... + 88343.

It is an arithmetic number, because the mean of its divisors is an integer number (14402016).

Almost surely, 2^220394418 is an apocalyptic number.

220394418 is an abundant number, since it is smaller than the sum of its proper divisors (240470094).

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

220394418 is a wasteful number, since it uses less digits than its factorization.

220394418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 220394418 is about 14845.6868483745. The cubic root of 220394418 is about 604.0416199410.

The spelling of 220394418 in words is "two hundred twenty million, three hundred ninety-four thousand, four hundred eighteen".