204602990 has 32 divisors (see below), whose sum is σ = 394359840. Its totient is φ = 76155904.

The previous prime is 204602977. The next prime is 204603017. The reversal of 204602990 is 99206402.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8369 + ... + 21891.

It is an arithmetic number, because the mean of its divisors is an integer number (12323745).

Almost surely, 2^204602990 is an apocalyptic number.

204602990 is a deficient number, since it is larger than the sum of its proper divisors (189756850).

204602990 is a wasteful number, since it uses less digits than its factorization.

204602990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13636.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 204602990 is about 14303.9501537163. The cubic root of 204602990 is about 589.2559710590.

The spelling of 204602990 in words is "two hundred four million, six hundred two thousand, nine hundred ninety".