30000393 has 12 divisors (see below), whose sum is σ = 45883188. Its totient is φ = 18823680.

The previous prime is 30000367. The next prime is 30000401. The reversal of 30000393 is 39300003.

It can be written as a sum of positive squares in 2 ways, for example, as 26749584 + 3250809 = 5172^2 + 1803^2 .

It is not a de Polignac number, because 30000393 - 2⁸ = 30000137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30000323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97888 + ... + 98193.

It is an arithmetic number, because the mean of its divisors is an integer number (3823599).

Almost surely, 2^30000393 is an apocalyptic number.

It is an amenable number.

30000393 is a deficient number, since it is larger than the sum of its proper divisors (15882795).

30000393 is a wasteful number, since it uses less digits than its factorization.

30000393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196104 (or 196101 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 18.

The square root of 30000393 is about 5477.2614507617. The cubic root of 30000393 is about 310.7246074143.

Adding to 30000393 its reverse (39300003), we get a palindrome (69300396).

The spelling of 30000393 in words is "thirty million, three hundred ninety-three", and thus it is an aban number.