30005305 has 8 divisors (see below), whose sum is σ = 39279744. Its totient is φ = 21822000.

The previous prime is 30005299. The next prime is 30005309. The reversal of 30005305 is 50350003.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30005305 - 2⁵ = 30005273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30005309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272721 + ... + 272830.

It is an arithmetic number, because the mean of its divisors is an integer number (4909968).

Almost surely, 2^30005305 is an apocalyptic number.

It is an amenable number.

30005305 is a deficient number, since it is larger than the sum of its proper divisors (9274439).

30005305 is a wasteful number, since it uses less digits than its factorization.

30005305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545567.

The product of its (nonzero) digits is 225, while the sum is 16.

The square root of 30005305 is about 5477.7098316724. The cubic root of 30005305 is about 310.7415649253.

Adding to 30005305 its reverse (50350003), we get a palindrome (80355308).

The spelling of 30005305 in words is "thirty million, five thousand, three hundred five".