204550000 has 60 divisors (see below), whose sum is σ = 495483912. Its totient is φ = 81800000.

The previous prime is 204549977. The next prime is 204550009. The reversal of 204550000 is 55402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204550009) 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 11 ways as a sum of consecutive naturals, for example, 47955 + ... + 52045.

Almost surely, 2^204550000 is an apocalyptic number.

204550000 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 204550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247741956).

204550000 is an abundant number, since it is smaller than the sum of its proper divisors (290933912).

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

204550000 is an frugal number, since it uses more digits than its factorization.

204550000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124 (or 4098 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 204550000 is about 14302.0977482326. The cubic root of 204550000 is about 589.2050963220.

The spelling of 204550000 in words is "two hundred four million, five hundred fifty thousand".