3220540305 has 8 divisors (see below), whose sum is σ = 5152864512. Its totient is φ = 1717621488.

The previous prime is 3220540303. The next prime is 3220540313. The reversal of 3220540305 is 5030450223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3220540305 - 2¹ = 3220540303 is a prime.

It is a super-2 number, since 2×3220540305² = 20743759712258986050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3220540303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107351329 + ... + 107351358.

It is an arithmetic number, because the mean of its divisors is an integer number (644108064).

Almost surely, 2^3220540305 is an apocalyptic number.

It is an amenable number.

3220540305 is a deficient number, since it is larger than the sum of its proper divisors (1932324207).

3220540305 is a wasteful number, since it uses less digits than its factorization.

3220540305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214702695.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 3220540305 is about 56749.8044490023. The cubic root of 3220540305 is about 1476.7588410571.

Adding to 3220540305 its reverse (5030450223), we get a palindrome (8250990528).

The spelling of 3220540305 in words is "three billion, two hundred twenty million, five hundred forty thousand, three hundred five".