4422420 has 72 divisors (see below), whose sum is σ = 13628160. Its totient is φ = 1160640.

The previous prime is 4422419. The next prime is 4422427. The reversal of 4422420 is 242244.

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 = 4422393 and 4422402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4422427) 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 23 ways as a sum of consecutive naturals, for example, 14065 + ... + 14375.

It is an arithmetic number, because the mean of its divisors is an integer number (189280).

Almost surely, 2^4422420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4422420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6814080).

4422420 is an abundant number, since it is smaller than the sum of its proper divisors (9205740).

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

4422420 is a wasteful number, since it uses less digits than its factorization.

4422420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 400 counting only the distinct ones).

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

The square root of 4422420 is about 2102.9550637139. The cubic root of 4422420 is about 164.1421036827.

Adding to 4422420 its reverse (242244), we get a palindrome (4664664).

It can be divided in two parts, 44224 and 20, that added together give a palindrome (44244).

The spelling of 4422420 in words is "four million, four hundred twenty-two thousand, four hundred twenty".