220255590 has 32 divisors (see below), whose sum is σ = 551598336. Its totient is φ = 56180960.

The previous prime is 220255579. The next prime is 220255597. The reversal of 220255590 is 95552022.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220255597) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 158916 + ... + 160295.

It is an arithmetic number, because the mean of its divisors is an integer number (17237448).

Almost surely, 2^220255590 is an apocalyptic number.

220255590 is an abundant number, since it is smaller than the sum of its proper divisors (331342746).

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

220255590 is a wasteful number, since it uses less digits than its factorization.

220255590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319244.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 220255590 is about 14841.0104103461. The cubic root of 220255590 is about 603.9147632742.

The spelling of 220255590 in words is "two hundred twenty million, two hundred fifty-five thousand, five hundred ninety".