204066100 has 72 divisors (see below), whose sum is σ = 519827840. Its totient is φ = 68065920.

The previous prime is 204066091. The next prime is 204066101. The reversal of 204066100 is 1660402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204066101) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 21961 + ... + 29839.

Almost surely, 2^204066100 is an apocalyptic number.

204066100 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 204066100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259913920).

204066100 is an abundant number, since it is smaller than the sum of its proper divisors (315761740).

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

204066100 is a wasteful number, since it uses less digits than its factorization.

204066100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7937 (or 7930 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 204066100 is about 14285.1706325126. The cubic root of 204066100 is about 588.7401057354.

The spelling of 204066100 in words is "two hundred four million, sixty-six thousand, one hundred".