4002020204 has 96 divisors (see below), whose sum is σ = 8767785600. Its totient is φ = 1556287488.

The previous prime is 4002020203. The next prime is 4002020207. The reversal of 4002020204 is 4020202004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (4002020203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6128342 + ... + 6128994.

It is an arithmetic number, because the mean of its divisors is an integer number (91331100).

Almost surely, 2^4002020204 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 4002020204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4383892800).

4002020204 is an abundant number, since it is smaller than the sum of its proper divisors (4765765396).

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

4002020204 is a wasteful number, since it uses less digits than its factorization.

4002020204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 937 counting only the distinct ones).

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

The square root of 4002020204 is about 63261.5223022652. The cubic root of 4002020204 is about 1587.6682464872.

Adding to 4002020204 its reverse (4020202004), we get a palindrome (8022222208).

The spelling of 4002020204 in words is "four billion, two million, twenty thousand, two hundred four".