2043520340 has 24 divisors (see below), whose sum is σ = 4335637992. Its totient is φ = 808980480.

The previous prime is 2043520333. The next prime is 2043520373. The reversal of 2043520340 is 430253402.

It can be written as a sum of positive squares in 4 ways, for example, as 405861316 + 1637659024 = 20146^2 + 40468^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 524741 + ... + 528620.

It is an arithmetic number, because the mean of its divisors is an integer number (180651583).

Almost surely, 2^2043520340 is an apocalyptic number.

2043520340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2043520340 is an abundant number, since it is smaller than the sum of its proper divisors (2292117652).

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

2043520340 is a wasteful number, since it uses less digits than its factorization.

2043520340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053467 (or 1053465 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 2043520340 is about 45205.3131832974. The cubic root of 2043520340 is about 1268.9942519874.

Adding to 2043520340 its reverse (430253402), we get a palindrome (2473773742).

The spelling of 2043520340 in words is "two billion, forty-three million, five hundred twenty thousand, three hundred forty".