2003534540 has 72 divisors (see below), whose sum is σ = 4906550880. Its totient is φ = 685214208.

The previous prime is 2003534539. The next prime is 2003534543. The reversal of 2003534540 is 454353002.

It is not an unprimeable number, because it can be changed into a prime (2003534543) 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 23 ways as a sum of consecutive naturals, for example, 427892 + ... + 432548.

It is an arithmetic number, because the mean of its divisors is an integer number (68146540).

Almost surely, 2^2003534540 is an apocalyptic number.

2003534540 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 2003534540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2453275440).

2003534540 is an abundant number, since it is smaller than the sum of its proper divisors (2903016340).

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

2003534540 is a wasteful number, since it uses less digits than its factorization.

2003534540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5119 (or 5110 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 2003534540 is about 44760.8594644920. The cubic root of 2003534540 is about 1260.6628199883.

Adding to 2003534540 its reverse (454353002), we get a palindrome (2457887542).

The spelling of 2003534540 in words is "two billion, three million, five hundred thirty-four thousand, five hundred forty".