204440120340 has 96 divisors (see below), whose sum is σ = 579572219520. Its totient is φ = 53837930496.

The previous prime is 204440120323. The next prime is 204440120369. The reversal of 204440120340 is 43021044402.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 204440120340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14220676 + ... + 14235044.

It is an arithmetic number, because the mean of its divisors is an integer number (6037210620).

Almost surely, 2^204440120340 is an apocalyptic number.

204440120340 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 204440120340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289786109760).

204440120340 is an abundant number, since it is smaller than the sum of its proper divisors (375132099180).

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

204440120340 is a wasteful number, since it uses less digits than its factorization.

204440120340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17321 (or 17319 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 204440120340 its reverse (43021044402), we get a palindrome (247461164742).

The spelling of 204440120340 in words is "two hundred four billion, four hundred forty million, one hundred twenty thousand, three hundred forty".