220404424 has 16 divisors (see below), whose sum is σ = 415544220. Its totient is φ = 109592640.

The previous prime is 220404413. The next prime is 220404433. The reversal of 220404424 is 424404022.

It can be written as a sum of positive squares in 2 ways, for example, as 143280900 + 77123524 = 11970^2 + 8782^2 .

It is a super-2 number, since 2×220404424² = 97156220237543552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220404395 and 220404404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74659 + ... + 77554.

Almost surely, 2^220404424 is an apocalyptic number.

It is an amenable number.

220404424 is a deficient number, since it is larger than the sum of its proper divisors (195139796).

220404424 is a wasteful number, since it uses less digits than its factorization.

220404424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152400 (or 152396 counting only the distinct ones).

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

The square root of 220404424 is about 14846.0238447875. The cubic root of 220404424 is about 604.0507610512.

Adding to 220404424 its reverse (424404022), we get a palindrome (644808446).

The spelling of 220404424 in words is "two hundred twenty million, four hundred four thousand, four hundred twenty-four".