220571220 has 24 divisors (see below), whose sum is σ = 617599584. Its totient is φ = 58818976.

The previous prime is 220571203. The next prime is 220571249. The reversal of 220571220 is 22175022.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 1838034 + ... + 1838153.

It is an arithmetic number, because the mean of its divisors is an integer number (25733316).

Almost surely, 2^220571220 is an apocalyptic number.

220571220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220571220 is an abundant number, since it is smaller than the sum of its proper divisors (397028364).

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

220571220 is a wasteful number, since it uses less digits than its factorization.

220571220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3676199 (or 3676197 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 220571220 is about 14851.6403134469. The cubic root of 220571220 is about 604.2030989577.

The spelling of 220571220 in words is "two hundred twenty million, five hundred seventy-one thousand, two hundred twenty".