4002044020 has 24 divisors (see below), whose sum is σ = 9050777064. Its totient is φ = 1477677696.

The previous prime is 4002044017. The next prime is 4002044021. The reversal of 4002044020 is 204402004.

4002044020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 54937744 + 3947106276 = 7412^2 + 62826^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4002043985 and 4002044003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002044021) 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, 7695979 + ... + 7696498.

It is an arithmetic number, because the mean of its divisors is an integer number (377115711).

Almost surely, 2^4002044020 is an apocalyptic number.

It is an amenable number.

4002044020 is an abundant number, since it is smaller than the sum of its proper divisors (5048733044).

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

4002044020 is a wasteful number, since it uses less digits than its factorization.

4002044020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15392499 (or 15392497 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 4002044020 is about 63261.7105364691. The cubic root of 4002044020 is about 1587.6713958826.

Adding to 4002044020 its reverse (204402004), we get a palindrome (4206446024).

The spelling of 4002044020 in words is "four billion, two million, forty-four thousand, twenty".