220489984 has 144 divisors (see below), whose sum is σ = 545993280. Its totient is φ = 87367680.

The previous prime is 220489979. The next prime is 220489999. The reversal of 220489984 is 489984022.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695394 + ... + 695710.

It is an arithmetic number, because the mean of its divisors is an integer number (3791620).

Almost surely, 2^220489984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220489984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272996640).

220489984 is an abundant number, since it is smaller than the sum of its proper divisors (325503296).

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

220489984 is a wasteful number, since it uses less digits than its factorization.

220489984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 220489984 is about 14848.9051448247. The cubic root of 220489984 is about 604.1289141964.

The spelling of 220489984 in words is "two hundred twenty million, four hundred eighty-nine thousand, nine hundred eighty-four".