220641244 has 24 divisors (see below), whose sum is σ = 393961568. Its totient is φ = 108103680.

The previous prime is 220641241. The next prime is 220641257. The reversal of 220641244 is 442146022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220641241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37204 + ... + 42724.

Almost surely, 2^220641244 is an apocalyptic number.

It is an amenable number.

220641244 is a deficient number, since it is larger than the sum of its proper divisors (173320324).

220641244 is a wasteful number, since it uses less digits than its factorization.

220641244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5725 (or 5723 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 220641244 is about 14853.9975764102. The cubic root of 220641244 is about 604.2670302984.

Adding to 220641244 its reverse (442146022), we get a palindrome (662787266).

The spelling of 220641244 in words is "two hundred twenty million, six hundred forty-one thousand, two hundred forty-four".