204049040 has 40 divisors (see below), whose sum is σ = 510910008. Its totient is φ = 75340800.

The previous prime is 204049039. The next prime is 204049063. The reversal of 204049040 is 40940402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31494544 + 172554496 = 5612^2 + 13136^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 204048997 and 204049015.

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, 97061 + ... + 99140.

Almost surely, 2^204049040 is an apocalyptic number.

204049040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204049040 is an abundant number, since it is smaller than the sum of its proper divisors (306860968).

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

204049040 is a wasteful number, since it uses less digits than its factorization.

204049040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196227 (or 196221 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 204049040 is about 14284.5734973082. The cubic root of 204049040 is about 588.7236989827.

Adding to 204049040 its reverse (40940402), we get a palindrome (244989442).

The spelling of 204049040 in words is "two hundred four million, forty-nine thousand, forty".