30305864 has 16 divisors (see below), whose sum is σ = 56882220. Its totient is φ = 15137280.

The previous prime is 30305861. The next prime is 30305887. The reversal of 30305864 is 46850303.

It can be written as a sum of positive squares in 2 ways, for example, as 28536964 + 1768900 = 5342^2 + 1330^2 .

It is not an unprimeable number, because it can be changed into a prime (30305861) 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 3 ways as a sum of consecutive naturals, for example, 12944 + ... + 15104.

Almost surely, 2^30305864 is an apocalyptic number.

It is an amenable number.

30305864 is a deficient number, since it is larger than the sum of its proper divisors (26576356).

30305864 is a wasteful number, since it uses less digits than its factorization.

30305864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3920 (or 3916 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 30305864 is about 5505.0762029240. The cubic root of 30305864 is about 311.7756715316.

The spelling of 30305864 in words is "thirty million, three hundred five thousand, eight hundred sixty-four".