2020405044 has 72 divisors (see below), whose sum is σ = 5489920800. Its totient is φ = 576631104.

The previous prime is 2020405043. The next prime is 2020405061. The reversal of 2020405044 is 4405040202.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 2020405044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020405043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 961507 + ... + 963605.

It is an arithmetic number, because the mean of its divisors is an integer number (76248900).

Almost surely, 2^2020405044 is an apocalyptic number.

It is an amenable number.

2020405044 is an abundant number, since it is smaller than the sum of its proper divisors (3469515756).

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

2020405044 is a wasteful number, since it uses less digits than its factorization.

2020405044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757 (or 3748 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 2020405044 is about 44948.9159379845. The cubic root of 2020405044 is about 1264.1913507844.

Adding to 2020405044 its reverse (4405040202), we get a palindrome (6425445246).

The spelling of 2020405044 in words is "two billion, twenty million, four hundred five thousand, forty-four".