204740436 has 12 divisors (see below), whose sum is σ = 477727712. Its totient is φ = 68246808.

The previous prime is 204740363. The next prime is 204740441. The reversal of 204740436 is 634047402.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×204740436² = 83837292266940192, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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, 8530840 + ... + 8530863.

Almost surely, 2^204740436 is an apocalyptic number.

It is an amenable number.

204740436 is an abundant number, since it is smaller than the sum of its proper divisors (272987276).

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

204740436 is a wasteful number, since it uses less digits than its factorization.

204740436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17061710 (or 17061708 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 204740436 is about 14308.7538241456. The cubic root of 204740436 is about 589.3878895405.

Adding to 204740436 its reverse (634047402), we get a palindrome (838787838).

The spelling of 204740436 in words is "two hundred four million, seven hundred forty thousand, four hundred thirty-six".