30847305 has 16 divisors (see below), whose sum is σ = 49795200. Its totient is φ = 16305408.

The previous prime is 30847291. The next prime is 30847309. The reversal of 30847305 is 50374803.

It is not a de Polignac number, because 30847305 - 2¹¹ = 30845257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30847309) 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 15 ways as a sum of consecutive naturals, for example, 7405 + ... + 10794.

It is an arithmetic number, because the mean of its divisors is an integer number (3112200).

Almost surely, 2^30847305 is an apocalyptic number.

It is an amenable number.

30847305 is a deficient number, since it is larger than the sum of its proper divisors (18947895).

30847305 is a wasteful number, since it uses less digits than its factorization.

30847305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18320.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 30847305 is about 5554.0350196951. The cubic root of 30847305 is about 313.6214385214.

The spelling of 30847305 in words is "thirty million, eight hundred forty-seven thousand, three hundred five".