305205530 has 16 divisors (see below), whose sum is σ = 627851520. Its totient is φ = 104641872.

The previous prime is 305205463. The next prime is 305205557. The reversal of 305205530 is 35502503.

It is a happy number.

305205530 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 = 305205496 and 305205505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2179970 + ... + 2180109.

It is an arithmetic number, because the mean of its divisors is an integer number (39240720).

Almost surely, 2^305205530 is an apocalyptic number.

305205530 is an abundant number, since it is smaller than the sum of its proper divisors (322645990).

305205530 is a wasteful number, since it uses less digits than its factorization.

305205530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360093.

The product of its (nonzero) digits is 2250, while the sum is 23.

The square root of 305205530 is about 17470.1325123767. The cubic root of 305205530 is about 673.2827165711.

The spelling of 305205530 in words is "three hundred five million, two hundred five thousand, five hundred thirty".