30305147 has 8 divisors (see below), whose sum is σ = 30964560. Its totient is φ = 29652480.

The previous prime is 30305141. The next prime is 30305159. The reversal of 30305147 is 74150303.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 30305147 - 2¹⁰ = 30304123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30305141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7979 + ... + 11147.

It is an arithmetic number, because the mean of its divisors is an integer number (3870570).

Almost surely, 2^30305147 is an apocalyptic number.

30305147 is a deficient number, since it is larger than the sum of its proper divisors (659413).

30305147 is a wasteful number, since it uses less digits than its factorization.

30305147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 30305147 is about 5505.0110808245. The cubic root of 30305147 is about 311.7732127674.

The spelling of 30305147 in words is "thirty million, three hundred five thousand, one hundred forty-seven".