204380881 has 4 divisors (see below), whose sum is σ = 204409764. Its totient is φ = 204352000.

The previous prime is 204380857. The next prime is 204380909. The reversal of 204380881 is 188083402.

204380881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 79299025 + 125081856 = 8905^2 + 11184^2 .

It is a cyclic number.

It is not a de Polignac number, because 204380881 - 2¹⁵ = 204348113 is a prime.

It is a super-2 number, since 2×204380881² = 83543089036672322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204380381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4161 + ... + 20641.

It is an arithmetic number, because the mean of its divisors is an integer number (51102441).

Almost surely, 2^204380881 is an apocalyptic number.

It is an amenable number.

204380881 is a deficient number, since it is larger than the sum of its proper divisors (28883).

204380881 is a wasteful number, since it uses less digits than its factorization.

204380881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28882.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 204380881 is about 14296.1841412315. The cubic root of 204380881 is about 589.0426694481.

The spelling of 204380881 in words is "two hundred four million, three hundred eighty thousand, eight hundred eighty-one".