220306244 has 12 divisors (see below), whose sum is σ = 387221100. Its totient is φ = 109671648.

The previous prime is 220306231. The next prime is 220306253. The reversal of 220306244 is 442603022.

It can be written as a sum of positive squares in 2 ways, for example, as 189392644 + 30913600 = 13762^2 + 5560^2 .

It is a super-2 number, since 2×220306244² = 97069682290775072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119339 + ... + 121170.

It is an arithmetic number, because the mean of its divisors is an integer number (32268425).

Almost surely, 2^220306244 is an apocalyptic number.

It is an amenable number.

220306244 is a deficient number, since it is larger than the sum of its proper divisors (166914856).

220306244 is a wasteful number, since it uses less digits than its factorization.

220306244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240742 (or 240740 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 220306244 is about 14842.7168672046. The cubic root of 220306244 is about 603.9610554835.

Adding to 220306244 its reverse (442603022), we get a palindrome (662909266).

The spelling of 220306244 in words is "two hundred twenty million, three hundred six thousand, two hundred forty-four".