204481900 has 108 divisors (see below), whose sum is σ = 534340800. Its totient is φ = 67643520.

The previous prime is 204481867. The next prime is 204481909. The reversal of 204481900 is 9184402.

It is a super-2 number, since 2×204481900² = 83625694855220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (204481909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 141381 + ... + 142819.

It is an arithmetic number, because the mean of its divisors is an integer number (4947600).

Almost surely, 2^204481900 is an apocalyptic number.

204481900 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 204481900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267170400).

204481900 is an abundant number, since it is smaller than the sum of its proper divisors (329858900).

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

204481900 is a wasteful number, since it uses less digits than its factorization.

204481900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496 (or 1482 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 204481900 is about 14299.7167804121. The cubic root of 204481900 is about 589.1397018451.

The spelling of 204481900 in words is "two hundred four million, four hundred eighty-one thousand, nine hundred".