220302813 has 16 divisors (see below), whose sum is σ = 312935616. Its totient is φ = 137376000.

The previous prime is 220302793. The next prime is 220302829. The reversal of 220302813 is 318203022.

It is not a de Polignac number, because 220302813 - 2¹² = 220298717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220302813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220302413) 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, 4938 + ... + 21563.

It is an arithmetic number, because the mean of its divisors is an integer number (19558476).

Almost surely, 2^220302813 is an apocalyptic number.

It is an amenable number.

220302813 is a deficient number, since it is larger than the sum of its proper divisors (92632803).

220302813 is a wasteful number, since it uses less digits than its factorization.

220302813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26684.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 220302813 is about 14842.6012881840. The cubic root of 220302813 is about 603.9579201493.

Adding to 220302813 its reverse (318203022), we get a palindrome (538505835).

The spelling of 220302813 in words is "two hundred twenty million, three hundred two thousand, eight hundred thirteen".