204036540 has 24 divisors (see below), whose sum is σ = 571302480. Its totient is φ = 54409728.

The previous prime is 204036509. The next prime is 204036559. The reversal of 204036540 is 45630402.

204036540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 204036540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1700245 + ... + 1700364.

It is an arithmetic number, because the mean of its divisors is an integer number (23804270).

Almost surely, 2^204036540 is an apocalyptic number.

204036540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204036540 is an abundant number, since it is smaller than the sum of its proper divisors (367265940).

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

204036540 is a wasteful number, since it uses less digits than its factorization.

204036540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400621 (or 3400619 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 204036540 is about 14284.1359556677. The cubic root of 204036540 is about 588.7116770418.

Adding to 204036540 its reverse (45630402), we get a palindrome (249666942).

The spelling of 204036540 in words is "two hundred four million, thirty-six thousand, five hundred forty".