204340100 has 18 divisors (see below), whose sum is σ = 443418234. Its totient is φ = 81736000.

The previous prime is 204340093. The next prime is 204340111. The reversal of 204340100 is 1043402.

It can be written as a sum of positive squares in 3 ways, for example, as 56911936 + 147428164 = 7544^2 + 12142^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1021601 + ... + 1021800.

Almost surely, 2^204340100 is an apocalyptic number.

204340100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204340100 is an abundant number, since it is smaller than the sum of its proper divisors (239078134).

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

204340100 is a wasteful number, since it uses less digits than its factorization.

204340100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043415 (or 2043408 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 204340100 is about 14294.7577803893. The cubic root of 204340100 is about 589.0034887659.

Adding to 204340100 its reverse (1043402), we get a palindrome (205383502).

The spelling of 204340100 in words is "two hundred four million, three hundred forty thousand, one hundred".