220530704 has 10 divisors (see below), whose sum is σ = 427278270. Its totient is φ = 110265344.

The previous prime is 220530689. The next prime is 220530733. The reversal of 220530704 is 407035022.

It can be written as a sum of positive squares in only one way, i.e., 220463104 + 67600 = 14848^2 + 260^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220530704.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6891569 + ... + 6891600.

It is an arithmetic number, because the mean of its divisors is an integer number (42727827).

Almost surely, 2^220530704 is an apocalyptic number.

It is an amenable number.

220530704 is a deficient number, since it is larger than the sum of its proper divisors (206747566).

220530704 is a wasteful number, since it uses less digits than its factorization.

220530704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13783177 (or 13783171 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 220530704 is about 14850.2762263872. The cubic root of 220530704 is about 604.1661020008.

Adding to 220530704 its reverse (407035022), we get a palindrome (627565726).

The spelling of 220530704 in words is "two hundred twenty million, five hundred thirty thousand, seven hundred four".