220424224 has 12 divisors (see below), whose sum is σ = 433960254. Its totient is φ = 110212096.

The previous prime is 220424209. The next prime is 220424251. The reversal of 220424224 is 422424022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 202208400 + 18215824 = 14220^2 + 4268^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220424195 and 220424204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3444097 + ... + 3444160.

Almost surely, 2^220424224 is an apocalyptic number.

It is an amenable number.

220424224 is a deficient number, since it is larger than the sum of its proper divisors (213536030).

220424224 is an equidigital number, since it uses as much as digits as its factorization.

220424224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6888267 (or 6888259 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 220424224 is about 14846.6906750292. The cubic root of 220424224 is about 604.0688487809.

Adding to 220424224 its reverse (422424022), we get a palindrome (642848246).

The spelling of 220424224 in words is "two hundred twenty million, four hundred twenty-four thousand, two hundred twenty-four".