220305346 has 8 divisors (see below), whose sum is σ = 349896780. Its totient is φ = 103673088.

The previous prime is 220305331. The next prime is 220305347. The reversal of 220305346 is 643503022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 217710025 + 2595321 = 14755^2 + 1611^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 220305346.

It is not an unprimeable number, because it can be changed into a prime (220305347) 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 3 ways as a sum of consecutive naturals, for example, 3239751 + ... + 3239818.

Almost surely, 2^220305346 is an apocalyptic number.

220305346 is a deficient number, since it is larger than the sum of its proper divisors (129591434).

220305346 is a wasteful number, since it uses less digits than its factorization.

220305346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6479588.

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

The square root of 220305346 is about 14842.6866166473. The cubic root of 220305346 is about 603.9602348717.

Adding to 220305346 its reverse (643503022), we get a palindrome (863808368).

The spelling of 220305346 in words is "two hundred twenty million, three hundred five thousand, three hundred forty-six".