2005530340 has 96 divisors (see below), whose sum is σ = 4681152000. Its totient is φ = 715653120.

The previous prime is 2005530323. The next prime is 2005530343. The reversal of 2005530340 is 430355002.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (2005530343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4466436 + ... + 4466884.

It is an arithmetic number, because the mean of its divisors is an integer number (48762000).

Almost surely, 2^2005530340 is an apocalyptic number.

2005530340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2005530340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2340576000).

2005530340 is an abundant number, since it is smaller than the sum of its proper divisors (2675621660).

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

2005530340 is a wasteful number, since it uses less digits than its factorization.

2005530340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 2005530340 is about 44783.1479465211. The cubic root of 2005530340 is about 1261.0812797700.

Adding to 2005530340 its reverse (430355002), we get a palindrome (2435885342).

The spelling of 2005530340 in words is "two billion, five million, five hundred thirty thousand, three hundred forty".