220305 has 16 divisors (see below), whose sum is σ = 371520. Its totient is φ = 111168.

The previous prime is 220301. The next prime is 220307. The reversal of 220305 is 503022.

220305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220305 - 2² = 220301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102 + ... + 671.

It is an arithmetic number, because the mean of its divisors is an integer number (23220).

2²²⁰³⁰⁵ is an apocalyptic number.

It is an amenable number.

220305 is a deficient number, since it is larger than the sum of its proper divisors (151215).

220305 is a wasteful number, since it uses less digits than its factorization.

220305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 220305 is about 469.3665944653. The cubic root of 220305 is about 60.3959918689.

Adding to 220305 its reverse (503022), we get a palindrome (723327).

It can be divided in two parts, 220 and 305, that added together give a palindrome (525).

The spelling of 220305 in words is "two hundred twenty thousand, three hundred five".