4005044020 has 24 divisors (see below), whose sum is σ = 8414628768. Its totient is φ = 1601248800.

The previous prime is 4005044011. The next prime is 4005044023. The reversal of 4005044020 is 204405004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005044023) 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, 4366 + ... + 89605.

It is an arithmetic number, because the mean of its divisors is an integer number (350609532).

Almost surely, 2^4005044020 is an apocalyptic number.

It is an amenable number.

4005044020 is an abundant number, since it is smaller than the sum of its proper divisors (4409584748).

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

4005044020 is a wasteful number, since it uses less digits than its factorization.

4005044020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96111 (or 96109 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 4005044020 is about 63285.4171195861. The cubic root of 4005044020 is about 1588.0680119213.

Adding to 4005044020 its reverse (204405004), we get a palindrome (4209449024).

The spelling of 4005044020 in words is "four billion, five million, forty-four thousand, twenty".