30808668 has 48 divisors (see below), whose sum is σ = 80962560. Its totient is φ = 9033600.

The previous prime is 30808663. The next prime is 30808669. The reversal of 30808668 is 86680803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30808663) 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 15 ways as a sum of consecutive naturals, for example, 328 + ... + 7856.

It is an arithmetic number, because the mean of its divisors is an integer number (1686720).

Almost surely, 2^30808668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30808668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40481280).

30808668 is an abundant number, since it is smaller than the sum of its proper divisors (50153892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30808668 is a wasteful number, since it uses less digits than its factorization.

30808668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7578 (or 7576 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 30808668 is about 5550.5556478609. Note that the first 3 decimals coincide. The cubic root of 30808668 is about 313.4904443211.

The spelling of 30808668 in words is "thirty million, eight hundred eight thousand, six hundred sixty-eight".