204730680 has 128 divisors (see below), whose sum is σ = 765780480. Its totient is φ = 42539520.

The previous prime is 204730663. The next prime is 204730739. The reversal of 204730680 is 86037402.

204730680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1839 + ... + 20318.

It is an arithmetic number, because the mean of its divisors is an integer number (5982660).

Almost surely, 2^204730680 is an apocalyptic number.

204730680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204730680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382890240).

204730680 is an abundant number, since it is smaller than the sum of its proper divisors (561049800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204730680 is a wasteful number, since it uses less digits than its factorization.

204730680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22189 (or 22185 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 204730680 is about 14308.4129098933. The cubic root of 204730680 is about 589.3785278340.

The spelling of 204730680 in words is "two hundred four million, seven hundred thirty thousand, six hundred eighty".