204389045 has 48 divisors (see below), whose sum is σ = 312035328. Its totient is φ = 127572480.

The previous prime is 204389033. The next prime is 204389047. The reversal of 204389045 is 540983402.

It is not a de Polignac number, because 204389045 - 2⁶ = 204388981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204388996 and 204389014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204389047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128324 + ... + 129906.

It is an arithmetic number, because the mean of its divisors is an integer number (6500736).

Almost surely, 2^204389045 is an apocalyptic number.

It is an amenable number.

204389045 is a deficient number, since it is larger than the sum of its proper divisors (107646283).

204389045 is a wasteful number, since it uses less digits than its factorization.

204389045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650 (or 1643 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 204389045 is about 14296.4696691176. The cubic root of 204389045 is about 589.0505124523.

The spelling of 204389045 in words is "two hundred four million, three hundred eighty-nine thousand, forty-five".