20130204040 has 32 divisors (see below), whose sum is σ = 46346287680. Its totient is φ = 7864823232.

The previous prime is 20130204019. The next prime is 20130204047. The reversal of 20130204040 is 4040203102.

It is a super-2 number, since 2×20130204040² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20130204047) 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, 5850084 + ... + 5853523.

It is an arithmetic number, because the mean of its divisors is an integer number (1448321490).

Almost surely, 2^20130204040 is an apocalyptic number.

20130204040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130204040 is an abundant number, since it is smaller than the sum of its proper divisors (26216083640).

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

20130204040 is a wasteful number, since it uses less digits than its factorization.

20130204040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11703661 (or 11703657 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20130204040 its reverse (4040203102), we get a palindrome (24170407142).

The spelling of 20130204040 in words is "twenty billion, one hundred thirty million, two hundred four thousand, forty".