204426216 has 48 divisors (see below), whose sum is σ = 557350560. Its totient is φ = 67687200.

The previous prime is 204426199. The next prime is 204426217. The reversal of 204426216 is 612624402.

204426216 is a `hidden beast` number, since 2 + 0 + 442 + 6 + 216 = 666.

204426216 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 204426216.

It is not an unprimeable number, because it can be changed into a prime (204426217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1471 + ... + 20273.

It is an arithmetic number, because the mean of its divisors is an integer number (11611470).

Almost surely, 2^204426216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204426216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278675280).

204426216 is an abundant number, since it is smaller than the sum of its proper divisors (352924344).

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

204426216 is a wasteful number, since it uses less digits than its factorization.

204426216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18966 (or 18959 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 204426216 is about 14297.7696162723. The cubic root of 204426216 is about 589.0862193063.

The spelling of 204426216 in words is "two hundred four million, four hundred twenty-six thousand, two hundred sixteen".