204830520 has 64 divisors (see below), whose sum is σ = 631113120. Its totient is φ = 53144064.

The previous prime is 204830519. The next prime is 204830537. The reversal of 204830520 is 25038402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18627 + ... + 27506.

Almost surely, 2^204830520 is an apocalyptic number.

204830520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204830520 is an abundant number, since it is smaller than the sum of its proper divisors (426282600).

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

204830520 is a wasteful number, since it uses less digits than its factorization.

204830520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46184 (or 46180 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 204830520 is about 14311.9013411915. The cubic root of 204830520 is about 589.4743187034.

Adding to 204830520 its reverse (25038402), we get a palindrome (229868922).

The spelling of 204830520 in words is "two hundred four million, eight hundred thirty thousand, five hundred twenty".