30000243 has 16 divisors (see below), whose sum is σ = 49231616. Its totient is φ = 15824160.

The previous prime is 30000199. The next prime is 30000247. The reversal of 30000243 is 34200003.

It is not a de Polignac number, because 30000243 - 2¹² = 29996147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30000247) 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, 54673 + ... + 55218.

It is an arithmetic number, because the mean of its divisors is an integer number (3076976).

Almost surely, 2^30000243 is an apocalyptic number.

30000243 is a deficient number, since it is larger than the sum of its proper divisors (19231373).

30000243 is a wasteful number, since it uses less digits than its factorization.

30000243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109914.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 30000243 is about 5477.2477577703. The cubic root of 30000243 is about 310.7240895459.

Adding to 30000243 its reverse (34200003), we get a palindrome (64200246).

It can be divided in two parts, 30000 and 243, that multiplied together give a square (7290000 = 2700²).

The spelling of 30000243 in words is "thirty million, two hundred forty-three", and thus it is an aban number.