204450012 has 72 divisors (see below), whose sum is σ = 571648896. Its totient is φ = 61202304.

The previous prime is 204449969. The next prime is 204450017. The reversal of 204450012 is 210054402.

204450012 is a `hidden beast` number, since 204 + 450 + 0 + 12 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204450017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11413 + ... + 23219.

It is an arithmetic number, because the mean of its divisors is an integer number (7939568).

Almost surely, 2^204450012 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 204450012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285824448).

204450012 is an abundant number, since it is smaller than the sum of its proper divisors (367198884).

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

204450012 is a wasteful number, since it uses less digits than its factorization.

204450012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11867 (or 11862 counting only the distinct ones).

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

The square root of 204450012 is about 14298.6017498216. The cubic root of 204450012 is about 589.1090757221.

The spelling of 204450012 in words is "two hundred four million, four hundred fifty thousand, twelve".