204343020 has 96 divisors (see below), whose sum is σ = 726566400. Its totient is φ = 46706112.

The previous prime is 204343003. The next prime is 204343033. The reversal of 204343020 is 20343402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 204342984 and 204343002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23250 + ... + 30809.

It is an arithmetic number, because the mean of its divisors is an integer number (7568400).

Almost surely, 2^204343020 is an apocalyptic number.

204343020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204343020 is an abundant number, since it is smaller than the sum of its proper divisors (522223380).

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

204343020 is a wasteful number, since it uses less digits than its factorization.

204343020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54084 (or 54076 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 204343020 is about 14294.8599153682. The cubic root of 204343020 is about 589.0062943533.

Adding to 204343020 its reverse (20343402), we get a palindrome (224686422).

The spelling of 204343020 in words is "two hundred four million, three hundred forty-three thousand, twenty".