220389984 has 60 divisors (see below), whose sum is σ = 648168444. Its totient is φ = 73462464.

The previous prime is 220389977. The next prime is 220390021. The reversal of 220389984 is 489983022.

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 39922 + ... + 45105.

Almost surely, 2^220389984 is an apocalyptic number.

220389984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220389984 is an abundant number, since it is smaller than the sum of its proper divisors (427778460).

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

220389984 is an equidigital number, since it uses as much as digits as its factorization.

220389984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85049 (or 85032 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 220389984 is about 14845.5375113197. The cubic root of 220389984 is about 604.0375691147.

The spelling of 220389984 in words is "two hundred twenty million, three hundred eighty-nine thousand, nine hundred eighty-four".