204553730 has 32 divisors (see below), whose sum is σ = 374145264. Its totient is φ = 80510976.

The previous prime is 204553681. The next prime is 204553751. The reversal of 204553730 is 37355402.

It can be written as a sum of positive squares in 8 ways, for example, as 36566209 + 167987521 = 6047^2 + 12961^2 .

It is a junction number, because it is equal to n+sod(n) for n = 204553693 and 204553702.

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 15 ways as a sum of consecutive naturals, for example, 176834 + ... + 177986.

Almost surely, 2^204553730 is an apocalyptic number.

204553730 is a deficient number, since it is larger than the sum of its proper divisors (169591534).

204553730 is a wasteful number, since it uses less digits than its factorization.

204553730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 204553730 is about 14302.2281480894. The cubic root of 204553730 is about 589.2086777148.

The spelling of 204553730 in words is "two hundred four million, five hundred fifty-three thousand, seven hundred thirty".