4224420 has 48 divisors (see below), whose sum is σ = 13144320. Its totient is φ = 1126368.

The previous prime is 4224397. The next prime is 4224427. The reversal of 4224420 is 244224.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 4224393 and 4224402.

It is not an unprimeable number, because it can be changed into a prime (4224427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3372 + ... + 4451.

It is an arithmetic number, because the mean of its divisors is an integer number (273840).

Almost surely, 2^4224420 is an apocalyptic number.

It is an amenable number.

4224420 is an abundant number, since it is smaller than the sum of its proper divisors (8919900).

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

4224420 is a wasteful number, since it uses less digits than its factorization.

4224420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7841 (or 7833 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 4224420 is about 2055.3393880330. The cubic root of 4224420 is about 161.6549583519.

Adding to 4224420 its reverse (244224), we get a palindrome (4468644).

The spelling of 4224420 in words is "four million, two hundred twenty-four thousand, four hundred twenty".