204012450 has 72 divisors (see below), whose sum is σ = 562973268. Its totient is φ = 52928640.

The previous prime is 204012449. The next prime is 204012451. The reversal of 204012450 is 54210402.

204012450 is a `hidden beast` number, since 20 + 401 + 245 + 0 = 666.

204012450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204012449) and next prime (204012451).

It can be written as a sum of positive squares in 6 ways, for example, as 118135161 + 85877289 = 10869^2 + 9267^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204012451) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10524 + ... + 22776.

Almost surely, 2^204012450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204012450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281486634).

204012450 is an abundant number, since it is smaller than the sum of its proper divisors (358960818).

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

204012450 is a wasteful number, since it uses less digits than its factorization.

204012450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12308 (or 12300 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 204012450 is about 14283.2926876123. The cubic root of 204012450 is about 588.6885069722.

Adding to 204012450 its reverse (54210402), we get a palindrome (258222852).

The spelling of 204012450 in words is "two hundred four million, twelve thousand, four hundred fifty".