204009436 has 12 divisors (see below), whose sum is σ = 357814800. Its totient is φ = 101776640.

The previous prime is 204009413. The next prime is 204009473. The reversal of 204009436 is 634900402.

204009436 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

204009436 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55000 + ... + 58591.

It is an arithmetic number, because the mean of its divisors is an integer number (29817900).

Almost surely, 2^204009436 is an apocalyptic number.

It is an amenable number.

204009436 is a deficient number, since it is larger than the sum of its proper divisors (153805364).

204009436 is a wasteful number, since it uses less digits than its factorization.

204009436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114044 (or 114042 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 204009436 is about 14283.1871793378. The cubic root of 204009436 is about 588.6856079401.

Adding to 204009436 its reverse (634900402), we get a palindrome (838909838).

The spelling of 204009436 in words is "two hundred four million, nine thousand, four hundred thirty-six".