204728797 has 12 divisors (see below), whose sum is σ = 253359840. Its totient is φ = 161982288.

The previous prime is 204728759. The next prime is 204728809. The reversal of 204728797 is 797827402.

It is not a de Polignac number, because 204728797 - 2²³ = 196340189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204728707) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 85347 + ... + 87712.

It is an arithmetic number, because the mean of its divisors is an integer number (21113320).

Almost surely, 2^204728797 is an apocalyptic number.

It is an amenable number.

204728797 is a deficient number, since it is larger than the sum of its proper divisors (48631043).

204728797 is a wasteful number, since it uses less digits than its factorization.

204728797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173092 (or 173079 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 204728797 is about 14308.3471092925. The cubic root of 204728797 is about 589.3767209022.

The spelling of 204728797 in words is "two hundred four million, seven hundred twenty-eight thousand, seven hundred ninety-seven".