220442005 has 32 divisors (see below), whose sum is σ = 317011968. Its totient is φ = 143880000.

The previous prime is 220441981. The next prime is 220442017. The reversal of 220442005 is 500244022.

It is not a de Polignac number, because 220442005 - 2¹⁵ = 220409237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201510 + ... + 202600.

It is an arithmetic number, because the mean of its divisors is an integer number (9906624).

Almost surely, 2^220442005 is an apocalyptic number.

It is an amenable number.

220442005 is a deficient number, since it is larger than the sum of its proper divisors (96569963).

220442005 is a wasteful number, since it uses less digits than its factorization.

220442005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 220442005 is about 14847.2894832693. The cubic root of 220442005 is about 604.0850911871.

Adding to 220442005 its reverse (500244022), we get a palindrome (720686027).

It can be divided in two parts, 220 and 442005, that added together give a square (442225 = 665²).

The spelling of 220442005 in words is "two hundred twenty million, four hundred forty-two thousand, five".