2003535020 has 24 divisors (see below), whose sum is σ = 4208668800. Its totient is φ = 801176832.

The previous prime is 2003534999. The next prime is 2003535029. The reversal of 2003535020 is 205353002.

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 = 2003534983 and 2003535001.

It is not an unprimeable number, because it can be changed into a prime (2003535029) 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 7 ways as a sum of consecutive naturals, for example, 64901 + ... + 90659.

It is an arithmetic number, because the mean of its divisors is an integer number (175361200).

Almost surely, 2^2003535020 is an apocalyptic number.

2003535020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2003535020 is an abundant number, since it is smaller than the sum of its proper divisors (2205133780).

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

2003535020 is a wasteful number, since it uses less digits than its factorization.

2003535020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29657 (or 29655 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 2003535020 is about 44760.8648263190. The cubic root of 2003535020 is about 1260.6629206634.

Adding to 2003535020 its reverse (205353002), we get a palindrome (2208888022).

It can be divided in two parts, 20035 and 35020, that added together give a palindrome (55055).

The spelling of 2003535020 in words is "two billion, three million, five hundred thirty-five thousand, twenty".