220124424 has 128 divisors (see below), whose sum is σ = 633830400. Its totient is φ = 63141120.

The previous prime is 220124407. The next prime is 220124473. The reversal of 220124424 is 424421022.

It is a self number, because there is not a number n which added to its sum of digits gives 220124424.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 420627 + ... + 421149.

It is an arithmetic number, because the mean of its divisors is an integer number (4951800).

Almost surely, 2^220124424 is an apocalyptic number.

220124424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220124424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316915200).

220124424 is an abundant number, since it is smaller than the sum of its proper divisors (413705976).

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

220124424 is a wasteful number, since it uses less digits than its factorization.

220124424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 220124424 is about 14836.5907135029. The cubic root of 220124424 is about 603.7948589193.

Adding to 220124424 its reverse (424421022), we get a palindrome (644545446).

The spelling of 220124424 in words is "two hundred twenty million, one hundred twenty-four thousand, four hundred twenty-four".