220530984 has 16 divisors (see below), whose sum is σ = 551327520. Its totient is φ = 73510320.

The previous prime is 220530983. The next prime is 220530997. The reversal of 220530984 is 489035022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (220530983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4594372 + ... + 4594419.

It is an arithmetic number, because the mean of its divisors is an integer number (34457970).

Almost surely, 2^220530984 is an apocalyptic number.

220530984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220530984 is an abundant number, since it is smaller than the sum of its proper divisors (330796536).

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

220530984 is a wasteful number, since it uses less digits than its factorization.

220530984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9188800 (or 9188796 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 220530984 is about 14850.2856538182. The cubic root of 220530984 is about 604.1663576968.

The spelling of 220530984 in words is "two hundred twenty million, five hundred thirty thousand, nine hundred eighty-four".