204886090 has 8 divisors (see below), whose sum is σ = 368794980. Its totient is φ = 81954432.

The previous prime is 204886051. The next prime is 204886109. The reversal of 204886090 is 90688402.

It can be written as a sum of positive squares in 2 ways, for example, as 195132961 + 9753129 = 13969^2 + 3123^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10244295 + ... + 10244314.

Almost surely, 2^204886090 is an apocalyptic number.

204886090 is a deficient number, since it is larger than the sum of its proper divisors (163908890).

204886090 is a wasteful number, since it uses less digits than its factorization.

204886090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20488616.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 204886090 is about 14313.8426007833. The cubic root of 204886090 is about 589.5276215121.

The spelling of 204886090 in words is "two hundred four million, eight hundred eighty-six thousand, ninety".