220340205 has 12 divisors (see below), whose sum is σ = 381923100. Its totient is φ = 117514752.

The previous prime is 220340203. The next prime is 220340209. The reversal of 220340205 is 502043022.

It can be written as a sum of positive squares in 2 ways, for example, as 162868644 + 57471561 = 12762^2 + 7581^2 .

It is not a de Polignac number, because 220340205 - 2¹ = 220340203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220340201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2448180 + ... + 2448269.

It is an arithmetic number, because the mean of its divisors is an integer number (31826925).

Almost surely, 2^220340205 is an apocalyptic number.

It is an amenable number.

220340205 is a deficient number, since it is larger than the sum of its proper divisors (161582895).

220340205 is a wasteful number, since it uses less digits than its factorization.

220340205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4896460 (or 4896457 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 220340205 is about 14843.8608522177. The cubic root of 220340205 is about 603.9920881454.

Adding to 220340205 its reverse (502043022), we get a palindrome (722383227).

The spelling of 220340205 in words is "two hundred twenty million, three hundred forty thousand, two hundred five".