4005020020 has 48 divisors (see below), whose sum is σ = 8470163520. Its totient is φ = 1590692864.

The previous prime is 4005020017. The next prime is 4005020053. The reversal of 4005020020 is 200205004.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2119236 + ... + 2121124.

It is an arithmetic number, because the mean of its divisors is an integer number (176461740).

Almost surely, 2^4005020020 is an apocalyptic number.

It is an amenable number.

4005020020 is an abundant number, since it is smaller than the sum of its proper divisors (4465143500).

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

4005020020 is a wasteful number, since it uses less digits than its factorization.

4005020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592 (or 2590 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 4005020020 is about 63285.2275021588. The cubic root of 4005020020 is about 1588.0648397790.

Adding to 4005020020 its reverse (200205004), we get a palindrome (4205225024).

The spelling of 4005020020 in words is "four billion, five million, twenty thousand, twenty".