204019100 has 18 divisors (see below), whose sum is σ = 442721664. Its totient is φ = 81607600.

The previous prime is 204019099. The next prime is 204019103. The reversal of 204019100 is 1910402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204019103) 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, 1019996 + ... + 1020195.

It is an arithmetic number, because the mean of its divisors is an integer number (24595648).

Almost surely, 2^204019100 is an apocalyptic number.

204019100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204019100 is an abundant number, since it is smaller than the sum of its proper divisors (238702564).

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

204019100 is a wasteful number, since it uses less digits than its factorization.

204019100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040205 (or 2040198 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 204019100 is about 14283.5254751759. The cubic root of 204019100 is about 588.6949032094.

Adding to 204019100 its reverse (1910402), we get a palindrome (205929502).

The spelling of 204019100 in words is "two hundred four million, nineteen thousand, one hundred".