204450156 has 60 divisors (see below), whose sum is σ = 536455920. Its totient is φ = 67897440.

The previous prime is 204450139. The next prime is 204450157. The reversal of 204450156 is 651054402.

204450156 is a `hidden beast` number, since 204 + 450 + 1 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (204450157) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 99750 + ... + 101778.

It is an arithmetic number, because the mean of its divisors is an integer number (8940932).

Almost surely, 2^204450156 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 204450156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268227960).

204450156 is an abundant number, since it is smaller than the sum of its proper divisors (332005764).

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

204450156 is a wasteful number, since it uses less digits than its factorization.

204450156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356 (or 2345 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 204450156 is about 14298.6067852781. The cubic root of 204450156 is about 589.1092140309.

The spelling of 204450156 in words is "two hundred four million, four hundred fifty thousand, one hundred fifty-six".