4020224 has 48 divisors (see below), whose sum is σ = 8714160. Its totient is φ = 1843200.

The previous prime is 4020223. The next prime is 4020227. The reversal of 4020224 is 4220204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4020199 and 4020208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26549 + ... + 26699.

It is an arithmetic number, because the mean of its divisors is an integer number (181545).

Almost surely, 2^4020224 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 4020224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4357080).

4020224 is an abundant number, since it is smaller than the sum of its proper divisors (4693936).

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

4020224 is a wasteful number, since it uses less digits than its factorization.

4020224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 4020224 is about 2005.0496253210. The cubic root of 4020224 is about 159.0071855724.

Adding to 4020224 its reverse (4220204), we get a palindrome (8240428).

The spelling of 4020224 in words is "four million, twenty thousand, two hundred twenty-four".