204045424 has 80 divisors (see below), whose sum is σ = 466684416. Its totient is φ = 85376000.

The previous prime is 204045419. The next prime is 204045433. The reversal of 204045424 is 424540402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139899 + ... + 141349.

Almost surely, 2^204045424 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 204045424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233342208).

204045424 is an abundant number, since it is smaller than the sum of its proper divisors (262638992).

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

204045424 is a wasteful number, since it uses less digits than its factorization.

204045424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534 (or 1528 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 204045424 is about 14284.4469266402. The cubic root of 204045424 is about 588.7202213261.

Adding to 204045424 its reverse (424540402), we get a palindrome (628585826).

The spelling of 204045424 in words is "two hundred four million, forty-five thousand, four hundred twenty-four".