2040444020 has 24 divisors (see below), whose sum is σ = 4291644168. Its totient is φ = 814899200.

The previous prime is 2040444019. The next prime is 2040444073. The reversal of 2040444020 is 204440402.

It can be written as a sum of positive squares in 4 ways, for example, as 1065630736 + 974813284 = 32644^2 + 31222^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2040443983 and 2040444001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66761 + ... + 92400.

It is an arithmetic number, because the mean of its divisors is an integer number (178818507).

Almost surely, 2^2040444020 is an apocalyptic number.

2040444020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2040444020 is an abundant number, since it is smaller than the sum of its proper divisors (2251200148).

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

2040444020 is a wasteful number, since it uses less digits than its factorization.

2040444020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159811 (or 159809 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 2040444020 is about 45171.2742791257. The cubic root of 2040444020 is about 1268.3571499391.

Adding to 2040444020 its reverse (204440402), we get a palindrome (2244884422).

The spelling of 2040444020 in words is "two billion, forty million, four hundred forty-four thousand, twenty".