220242404 has 12 divisors (see below), whose sum is σ = 385725228. Its totient is φ = 110035200.

The previous prime is 220242403. The next prime is 220242479. The reversal of 220242404 is 404242022.

It can be written as a sum of positive squares in 2 ways, for example, as 195720100 + 24522304 = 13990^2 + 4952^2 .

It is not an unprimeable number, because it can be changed into a prime (220242403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15557 + ... + 26124.

It is an arithmetic number, because the mean of its divisors is an integer number (32143769).

Almost surely, 2^220242404 is an apocalyptic number.

It is an amenable number.

220242404 is a deficient number, since it is larger than the sum of its proper divisors (165482824).

220242404 is a wasteful number, since it uses less digits than its factorization.

220242404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43006 (or 43004 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 220242404 is about 14840.5661617069. The cubic root of 220242404 is about 603.9027115498.

Adding to 220242404 its reverse (404242022), we get a palindrome (624484426).

The spelling of 220242404 in words is "two hundred twenty million, two hundred forty-two thousand, four hundred four".