204444145 has 32 divisors (see below), whose sum is σ = 260029440. Its totient is φ = 154150080.

The previous prime is 204444143. The next prime is 204444157. The reversal of 204444145 is 541444402.

It is not a de Polignac number, because 204444145 - 2¹ = 204444143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204444143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 900522 + ... + 900748.

It is an arithmetic number, because the mean of its divisors is an integer number (8125920).

Almost surely, 2^204444145 is an apocalyptic number.

It is an amenable number.

204444145 is a deficient number, since it is larger than the sum of its proper divisors (55585295).

204444145 is a wasteful number, since it uses less digits than its factorization.

204444145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 204444145 is about 14298.3965884291. The cubic root of 204444145 is about 589.1034405451.

Adding to 204444145 its reverse (541444402), we get a palindrome (745888547).

The spelling of 204444145 in words is "two hundred four million, four hundred forty-four thousand, one hundred forty-five".