30668871 has 4 divisors (see below), whose sum is σ = 40891832. Its totient is φ = 20445912.

The previous prime is 30668839. The next prime is 30668873. The reversal of 30668871 is 17886603.

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

It is not a de Polignac number, because 30668871 - 2⁵ = 30668839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30668873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5111476 + ... + 5111481.

It is an arithmetic number, because the mean of its divisors is an integer number (10222958).

Almost surely, 2^30668871 is an apocalyptic number.

30668871 is a deficient number, since it is larger than the sum of its proper divisors (10222961).

30668871 is a wasteful number, since it uses less digits than its factorization.

30668871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10222960.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 30668871 is about 5537.9482662806. The cubic root of 30668871 is about 313.0155619723.

The spelling of 30668871 in words is "thirty million, six hundred sixty-eight thousand, eight hundred seventy-one".