204128330 has 16 divisors (see below), whose sum is σ = 419921280. Its totient is φ = 69986832.

The previous prime is 204128329. The next prime is 204128339. The reversal of 204128330 is 33821402.

204128330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 204128296 and 204128305.

It is not an unprimeable number, because it can be changed into a prime (204128339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1457990 + ... + 1458129.

It is an arithmetic number, because the mean of its divisors is an integer number (26245080).

Almost surely, 2^204128330 is an apocalyptic number.

204128330 is an abundant number, since it is smaller than the sum of its proper divisors (215792950).

204128330 is a wasteful number, since it uses less digits than its factorization.

204128330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916133.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 204128330 is about 14287.3485993728. The cubic root of 204128330 is about 588.7999451260.

Adding to 204128330 its reverse (33821402), we get a palindrome (237949732).

The spelling of 204128330 in words is "two hundred four million, one hundred twenty-eight thousand, three hundred thirty".