204442745 has 16 divisors (see below), whose sum is σ = 275692032. Its totient is φ = 144408000.

The previous prime is 204442709. The next prime is 204442747. The reversal of 204442745 is 547244402.

It is not a de Polignac number, because 204442745 - 2¹⁶ = 204377209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204442747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66881 + ... + 69870.

It is an arithmetic number, because the mean of its divisors is an integer number (17230752).

Almost surely, 2^204442745 is an apocalyptic number.

It is an amenable number.

204442745 is a deficient number, since it is larger than the sum of its proper divisors (71249287).

204442745 is a wasteful number, since it uses less digits than its factorization.

204442745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136792.

The product of its (nonzero) digits is 35840, while the sum is 32.

The square root of 204442745 is about 14298.3476318070. The cubic root of 204442745 is about 589.1020958475.

The spelling of 204442745 in words is "two hundred four million, four hundred forty-two thousand, seven hundred forty-five".