30668933 has 8 divisors (see below), whose sum is σ = 31468800. Its totient is φ = 29873088.

The previous prime is 30668929. The next prime is 30668987. The reversal of 30668933 is 33986603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30668933 - 2² = 30668929 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 (30668903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19853 + ... + 21341.

It is an arithmetic number, because the mean of its divisors is an integer number (3933600).

Almost surely, 2^30668933 is an apocalyptic number.

It is an amenable number.

30668933 is a deficient number, since it is larger than the sum of its proper divisors (799867).

30668933 is a wasteful number, since it uses less digits than its factorization.

30668933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 30668933 is about 5537.9538640187. The cubic root of 30668933 is about 313.0157729023.

The spelling of 30668933 in words is "thirty million, six hundred sixty-eight thousand, nine hundred thirty-three".