4000003020 has 192 divisors, whose sum is σ = 13622878080. Its totient is φ = 968371200.

The previous prime is 4000003013. The next prime is 4000003027. The reversal of 4000003020 is 203000004.

It is an interprime number because it is at equal distance from previous prime (4000003013) and next prime (4000003027).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 4000002993 and 4000003011.

It is not an unprimeable number, because it can be changed into a prime (4000003027) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 423550 + ... + 432890.

It is an arithmetic number, because the mean of its divisors is an integer number (70952490).

Almost surely, 2^4000003020 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 4000003020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6811439040).

4000003020 is an abundant number, since it is smaller than the sum of its proper divisors (9622875060).

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

4000003020 is a wasteful number, since it uses less digits than its factorization.

4000003020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9433 (or 9425 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 4000003020 is about 63245.5770785594. The cubic root of 4000003020 is about 1587.4014514640.

Adding to 4000003020 its reverse (203000004), we get a palindrome (4203003024).

The spelling of 4000003020 in words is "four billion, three thousand, twenty".