204928181 has 8 divisors (see below), whose sum is σ = 215589600. Its totient is φ = 194506480.

The previous prime is 204928169. The next prime is 204928189. The reversal of 204928181 is 181829402.

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

It is not a de Polignac number, because 204928181 - 2¹⁰ = 204927157 is a prime.

It is a super-2 number, since 2×204928181² = 83991118735937522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204928189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58175 + ... + 61596.

It is an arithmetic number, because the mean of its divisors is an integer number (26948700).

Almost surely, 2^204928181 is an apocalyptic number.

It is an amenable number.

204928181 is a deficient number, since it is larger than the sum of its proper divisors (10661419).

204928181 is a wasteful number, since it uses less digits than its factorization.

204928181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119859.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 204928181 is about 14315.3128153038. The cubic root of 204928181 is about 589.5679888337.

The spelling of 204928181 in words is "two hundred four million, nine hundred twenty-eight thousand, one hundred eighty-one".