30306768 has 20 divisors (see below), whose sum is σ = 78292608. Its totient is φ = 10102240.

The previous prime is 30306761. The next prime is 30306781. The reversal of 30306768 is 86760303.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30306761) 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 3 ways as a sum of consecutive naturals, for example, 315648 + ... + 315743.

Almost surely, 2^30306768 is an apocalyptic number.

It is an amenable number.

30306768 is an abundant number, since it is smaller than the sum of its proper divisors (47985840).

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

30306768 is a wasteful number, since it uses less digits than its factorization.

30306768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631402 (or 631396 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 30306768 is about 5505.1583083505. The cubic root of 30306768 is about 311.7787715082.

The spelling of 30306768 in words is "thirty million, three hundred six thousand, seven hundred sixty-eight".