2040444240 has 80 divisors (see below), whose sum is σ = 6333427968. Its totient is φ = 543426048.

The previous prime is 2040444239. The next prime is 2040444247. The reversal of 2040444240 is 424440402.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2040444240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040444247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199737 + ... + 209703.

Almost surely, 2^2040444240 is an apocalyptic number.

2040444240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2040444240 is an abundant number, since it is smaller than the sum of its proper divisors (4292983728).

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

2040444240 is a wasteful number, since it uses less digits than its factorization.

2040444240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10836 (or 10830 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 2040444240 is about 45171.2767143015. The cubic root of 2040444240 is about 1268.3571955237.

Adding to 2040444240 its reverse (424440402), we get a palindrome (2464884642).

The spelling of 2040444240 in words is "two billion, forty million, four hundred forty-four thousand, two hundred forty".