30239968 has 24 divisors (see below), whose sum is σ = 64947960. Its totient is φ = 13745280.

The previous prime is 30239959. The next prime is 30239969. The reversal of 30239968 is 86993203.

It is a self number, because there is not a number n which added to its sum of digits gives 30239968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30239969) 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, 42603 + ... + 43306.

It is an arithmetic number, because the mean of its divisors is an integer number (2706165).

Almost surely, 2^30239968 is an apocalyptic number.

It is an amenable number.

30239968 is an abundant number, since it is smaller than the sum of its proper divisors (34707992).

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

30239968 is a wasteful number, since it uses less digits than its factorization.

30239968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85930 (or 85922 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 30239968 is about 5499.0879243744. The cubic root of 30239968 is about 311.5495362170.

The spelling of 30239968 in words is "thirty million, two hundred thirty-nine thousand, nine hundred sixty-eight".