30164391 has 6 divisors (see below), whose sum is σ = 43570800. Its totient is φ = 20109588.

The previous prime is 30164389. The next prime is 30164401. The reversal of 30164391 is 19346103.

It is not a de Polignac number, because 30164391 - 2¹ = 30164389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30164311) 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 5 ways as a sum of consecutive naturals, for example, 1675791 + ... + 1675808.

It is an arithmetic number, because the mean of its divisors is an integer number (7261800).

Almost surely, 2^30164391 is an apocalyptic number.

30164391 is a deficient number, since it is larger than the sum of its proper divisors (13406409).

30164391 is a wasteful number, since it uses less digits than its factorization.

30164391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351605 (or 3351602 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 30164391 is about 5492.2118495193. The cubic root of 30164391 is about 311.2897737917.

The spelling of 30164391 in words is "thirty million, one hundred sixty-four thousand, three hundred ninety-one".