220503424 has 32 divisors (see below), whose sum is σ = 451166400. Its totient is φ = 107269632.

The previous prime is 220503397. The next prime is 220503427. The reversal of 220503424 is 424305022.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 220503395 and 220503404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220503427) 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, 18544 + ... + 28015.

It is an arithmetic number, because the mean of its divisors is an integer number (14098950).

Almost surely, 2^220503424 is an apocalyptic number.

It is an amenable number.

220503424 is an abundant number, since it is smaller than the sum of its proper divisors (230662976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220503424 is an equidigital number, since it uses as much as digits as its factorization.

220503424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46610 (or 46598 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 220503424 is about 14849.3576965470. The cubic root of 220503424 is about 604.1411888699.

Adding to 220503424 its reverse (424305022), we get a palindrome (644808446).

The spelling of 220503424 in words is "two hundred twenty million, five hundred three thousand, four hundred twenty-four".