220345306 has 16 divisors (see below), whose sum is σ = 349194240. Its totient is φ = 104109040.

The previous prime is 220345291. The next prime is 220345331. The reversal of 220345306 is 603543022.

It is a happy number.

220345306 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37690 + ... + 43141.

It is an arithmetic number, because the mean of its divisors is an integer number (21824640).

Almost surely, 2^220345306 is an apocalyptic number.

220345306 is a deficient number, since it is larger than the sum of its proper divisors (128848934).

220345306 is a wasteful number, since it uses less digits than its factorization.

220345306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80909.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 220345306 is about 14844.0326730980. The cubic root of 220345306 is about 603.9967490286.

Adding to 220345306 its reverse (603543022), we get a palindrome (823888328).

The spelling of 220345306 in words is "two hundred twenty million, three hundred forty-five thousand, three hundred six".