204450220 has 96 divisors (see below), whose sum is σ = 487710720. Its totient is φ = 71427840.

The previous prime is 204450173. The next prime is 204450221. The reversal of 204450220 is 22054402.

204450220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (204450221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1070325 + ... + 1070515.

It is an arithmetic number, because the mean of its divisors is an integer number (5080320).

Almost surely, 2^204450220 is an apocalyptic number.

204450220 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 204450220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243855360).

204450220 is an abundant number, since it is smaller than the sum of its proper divisors (283260500).

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

204450220 is a wasteful number, since it uses less digits than its factorization.

204450220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 204450220 is about 14298.6090232582. The cubic root of 204450220 is about 589.1092755014.

The spelling of 204450220 in words is "two hundred four million, four hundred fifty thousand, two hundred twenty".