220306 has 8 divisors (see below), whose sum is σ = 336240. Its totient is φ = 108228.

The previous prime is 220301. The next prime is 220307. The reversal of 220306 is 603022.

220306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 816 + ... + 1051.

It is an arithmetic number, because the mean of its divisors is an integer number (42030).

2²²⁰³⁰⁶ is an apocalyptic number.

220306 is a deficient number, since it is larger than the sum of its proper divisors (115934).

220306 is a wasteful number, since it uses less digits than its factorization.

220306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 220306 is about 469.3676597296. The cubic root of 220306 is about 60.3960832511.

Adding to 220306 its reverse (603022), we get a palindrome (823328).

The spelling of 220306 in words is "two hundred twenty thousand, three hundred six".