204354100 has 18 divisors (see below), whose sum is σ = 443448614. Its totient is φ = 81741600.

The previous prime is 204354091. The next prime is 204354107. The reversal of 204354100 is 1453402.

It can be written as a sum of positive squares in 3 ways, for example, as 30008484 + 174345616 = 5478^2 + 13204^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204354107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1021671 + ... + 1021870.

Almost surely, 2^204354100 is an apocalyptic number.

204354100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204354100 is an abundant number, since it is smaller than the sum of its proper divisors (239094514).

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

204354100 is a wasteful number, since it uses less digits than its factorization.

204354100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043555 (or 2043548 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 204354100 is about 14295.2474620064. The cubic root of 204354100 is about 589.0169399690.

The spelling of 204354100 in words is "two hundred four million, three hundred fifty-four thousand, one hundred".