204590881 has 8 divisors (see below), whose sum is σ = 223483104. Its totient is φ = 185747520.

The previous prime is 204590839. The next prime is 204590887. The reversal of 204590881 is 188095402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204590881 - 2¹³ = 204582689 is a prime.

It is a super-2 number, since 2×204590881² = 83714857176712322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204590881.

It is not an unprimeable number, because it can be changed into a prime (204590887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3160 + ... + 20473.

It is an arithmetic number, because the mean of its divisors is an integer number (27935388).

Almost surely, 2^204590881 is an apocalyptic number.

It is an amenable number.

204590881 is a deficient number, since it is larger than the sum of its proper divisors (18892223).

204590881 is a wasteful number, since it uses less digits than its factorization.

204590881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24431.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 204590881 is about 14303.5268727681. The cubic root of 204590881 is about 589.2443462023.

The spelling of 204590881 in words is "two hundred four million, five hundred ninety thousand, eight hundred eighty-one".