224404420 has 24 divisors (see below), whose sum is σ = 498970584. Its totient is φ = 84481536.

The previous prime is 224404417. The next prime is 224404463. The reversal of 224404420 is 24404422.

It can be written as a sum of positive squares in 4 ways, for example, as 29746116 + 194658304 = 5454^2 + 13952^2 .

It is a junction number, because it is equal to n+sod(n) for n = 224404391 and 224404400.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 329667 + ... + 330346.

It is an arithmetic number, because the mean of its divisors is an integer number (20790441).

Almost surely, 2^224404420 is an apocalyptic number.

224404420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224404420 is an abundant number, since it is smaller than the sum of its proper divisors (274566164).

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

224404420 is a wasteful number, since it uses less digits than its factorization.

224404420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660039 (or 660037 counting only the distinct ones).

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

The square root of 224404420 is about 14980.1341783043. The cubic root of 224404420 is about 607.6830678836.

Adding to 224404420 its reverse (24404422), we get a palindrome (248808842).

The spelling of 224404420 in words is "two hundred twenty-four million, four hundred four thousand, four hundred twenty".