8224420 has 24 divisors (see below), whose sum is σ = 17378424. Its totient is φ = 3269376.

The previous prime is 8224417. The next prime is 8224421. The reversal of 8224420 is 244228.

It can be written as a sum of positive squares in 4 ways, for example, as 1954404 + 6270016 = 1398^2 + 2504^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8224391 and 8224400.

It is not an unprimeable number, because it can be changed into a prime (8224421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2272 + ... + 4648.

It is an arithmetic number, because the mean of its divisors is an integer number (724101).

Almost surely, 2^8224420 is an apocalyptic number.

It is an amenable number.

8224420 is an abundant number, since it is smaller than the sum of its proper divisors (9154004).

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

8224420 is a wasteful number, since it uses less digits than its factorization.

8224420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559 (or 2557 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 8224420 is about 2867.8249597910. The cubic root of 8224420 is about 201.8529465952.

Adding to 8224420 its reverse (244228), we get a palindrome (8468648).

The spelling of 8224420 in words is "eight million, two hundred twenty-four thousand, four hundred twenty".