30068391 has 16 divisors (see below), whose sum is σ = 41347584. Its totient is φ = 19425984.

The previous prime is 30068377. The next prime is 30068399. The reversal of 30068391 is 19386003.

It is a de Polignac number, because none of the positive numbers 2^k-30068391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30068399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14091 + ... + 16083.

It is an arithmetic number, because the mean of its divisors is an integer number (2584224).

Almost surely, 2^30068391 is an apocalyptic number.

30068391 is a deficient number, since it is larger than the sum of its proper divisors (11279193).

30068391 is a wasteful number, since it uses less digits than its factorization.

30068391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 30068391 is about 5483.4652365088. The cubic root of 30068391 is about 310.9591899939.

The spelling of 30068391 in words is "thirty million, sixty-eight thousand, three hundred ninety-one".