220305045 has 32 divisors (see below), whose sum is σ = 359718912. Its totient is φ = 115106112.

The previous prime is 220305037. The next prime is 220305073. The reversal of 220305045 is 540503022.

It is not a de Polignac number, because 220305045 - 2³ = 220305037 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 223624 + ... + 224606.

It is an arithmetic number, because the mean of its divisors is an integer number (11241216).

Almost surely, 2^220305045 is an apocalyptic number.

It is an amenable number.

220305045 is a deficient number, since it is larger than the sum of its proper divisors (139413867).

220305045 is a wasteful number, since it uses less digits than its factorization.

220305045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 220305045 is about 14842.6764769700. The cubic root of 220305045 is about 603.9599598108.

Adding to 220305045 its reverse (540503022), we get a palindrome (760808067).

The spelling of 220305045 in words is "two hundred twenty million, three hundred five thousand, forty-five".