220332305 has 16 divisors (see below), whose sum is σ = 270746064. Its totient is φ = 172078080.

The previous prime is 220332271. The next prime is 220332311. The reversal of 220332305 is 503233022.

It can be written as a sum of positive squares in 8 ways, for example, as 23435281 + 196897024 = 4841^2 + 14032^2 .

It is not a de Polignac number, because 220332305 - 2¹⁰ = 220331281 is a prime.

It is a super-2 number, since 2×220332305² = 97092649253226050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39149 + ... + 44421.

It is an arithmetic number, because the mean of its divisors is an integer number (16921629).

Almost surely, 2^220332305 is an apocalyptic number.

It is an amenable number.

220332305 is a deficient number, since it is larger than the sum of its proper divisors (50413759).

220332305 is a wasteful number, since it uses less digits than its factorization.

220332305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5476.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 220332305 is about 14843.5947465565. The cubic root of 220332305 is about 603.9848696194.

Adding to 220332305 its reverse (503233022), we get a palindrome (723565327).

The spelling of 220332305 in words is "two hundred twenty million, three hundred thirty-two thousand, three hundred five".