220555284 has 24 divisors (see below), whose sum is σ = 514993920. Its totient is φ = 73466304.

The previous prime is 220555267. The next prime is 220555301. The reversal of 220555284 is 482555022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (220555267) and next prime (220555301).

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 7 ways as a sum of consecutive naturals, for example, 13597 + ... + 25019.

It is an arithmetic number, because the mean of its divisors is an integer number (21458080).

Almost surely, 2^220555284 is an apocalyptic number.

It is an amenable number.

220555284 is an abundant number, since it is smaller than the sum of its proper divisors (294438636).

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

220555284 is a wasteful number, since it uses less digits than its factorization.

220555284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13039 (or 13037 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 33.

The square root of 220555284 is about 14851.1037973613. The cubic root of 220555284 is about 604.1885476298.

The spelling of 220555284 in words is "two hundred twenty million, five hundred fifty-five thousand, two hundred eighty-four".