204424020040 has 32 divisors (see below), whose sum is σ = 461001816000. Its totient is φ = 81583337664.

The previous prime is 204424020013. The next prime is 204424020091. The reversal of 204424020040 is 40020424402.

It is a junction number, because it is equal to n+sod(n) for n = 204424019993 and 204424020020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5803170 + ... + 5838289.

It is an arithmetic number, because the mean of its divisors is an integer number (14406306750).

Almost surely, 2^204424020040 is an apocalyptic number.

204424020040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204424020040 is an abundant number, since it is smaller than the sum of its proper divisors (256577795960).

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

204424020040 is a wasteful number, since it uses less digits than its factorization.

204424020040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11641909 (or 11641905 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 204424020040 its reverse (40020424402), we get a palindrome (244444444442).

The spelling of 204424020040 in words is "two hundred four billion, four hundred twenty-four million, twenty thousand, forty".