4022020 has 12 divisors (see below), whose sum is σ = 8446284. Its totient is φ = 1608800.

The previous prime is 4022017. The next prime is 4022021. The reversal of 4022020 is 202204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 760384 + 3261636 = 872^2 + 1806^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 4021988 and 4022006.

It is not an unprimeable number, because it can be changed into a prime (4022021) 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, 100531 + ... + 100570.

It is an arithmetic number, because the mean of its divisors is an integer number (703857).

Almost surely, 2^4022020 is an apocalyptic number.

It is an amenable number.

4022020 is an abundant number, since it is smaller than the sum of its proper divisors (4424264).

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

4022020 is a wasteful number, since it uses less digits than its factorization.

4022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201110 (or 201108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 4022020 is about 2005.4974445259. The cubic root of 4022020 is about 159.0308604050.

Adding to 4022020 its reverse (202204), we get a palindrome (4224224).

The spelling of 4022020 in words is "four million, twenty-two thousand, twenty".