204220304340 has 192 divisors, whose sum is σ = 637561532160. Its totient is φ = 48496250880.

The previous prime is 204220304333. The next prime is 204220304399. The reversal of 204220304340 is 43403022402.

It is a self number, because there is not a number n which added to its sum of digits gives 204220304340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34628272 + ... + 34634168.

It is an arithmetic number, because the mean of its divisors is an integer number (3320632980).

Almost surely, 2^204220304340 is an apocalyptic number.

204220304340 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 204220304340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318780766080).

204220304340 is an abundant number, since it is smaller than the sum of its proper divisors (433341227820).

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

204220304340 is a wasteful number, since it uses less digits than its factorization.

204220304340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7482 (or 7480 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 204220304340 its reverse (43403022402), we get a palindrome (247623326742).

The spelling of 204220304340 in words is "two hundred four billion, two hundred twenty million, three hundred four thousand, three hundred forty".