220020984 has 24 divisors (see below), whose sum is σ = 595890360. Its totient is φ = 73340304.

The previous prime is 220020949. The next prime is 220021003. The reversal of 220020984 is 489020022.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1527852 + ... + 1527995.

It is an arithmetic number, because the mean of its divisors is an integer number (24828765).

Almost surely, 2^220020984 is an apocalyptic number.

220020984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220020984 is an abundant number, since it is smaller than the sum of its proper divisors (375869376).

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

220020984 is a wasteful number, since it uses less digits than its factorization.

220020984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055859 (or 3055852 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 220020984 is about 14833.1043278203. The cubic root of 220020984 is about 603.7002664690.

The spelling of 220020984 in words is "two hundred twenty million, twenty thousand, nine hundred eighty-four".