30068513 has 4 divisors (see below), whose sum is σ = 30091668. Its totient is φ = 30045360.

The previous prime is 30068497. The next prime is 30068537. The reversal of 30068513 is 31586003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8427409 + 21641104 = 2903^2 + 4652^2 .

It is a cyclic number.

It is not a de Polignac number, because 30068513 - 2⁴ = 30068497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30068593) 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, 9506 + ... + 12267.

It is an arithmetic number, because the mean of its divisors is an integer number (7522917).

Almost surely, 2^30068513 is an apocalyptic number.

It is an amenable number.

30068513 is a deficient number, since it is larger than the sum of its proper divisors (23155).

30068513 is a wasteful number, since it uses less digits than its factorization.

30068513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23154.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 30068513 is about 5483.4763608499. The cubic root of 30068513 is about 310.9596105570.

The spelling of 30068513 in words is "thirty million, sixty-eight thousand, five hundred thirteen".