30389712 has 80 divisors (see below), whose sum is σ = 81369792. Its totient is φ = 9768960.

The previous prime is 30389701. The next prime is 30389713. The reversal of 30389712 is 21798303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30389713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283963 + ... + 284069.

Almost surely, 2^30389712 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 30389712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40684896).

30389712 is an abundant number, since it is smaller than the sum of its proper divisors (50980080).

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

30389712 is a wasteful number, since it uses less digits than its factorization.

30389712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 30389712 is about 5512.6864594316. The cubic root of 30389712 is about 312.0629393078.

The spelling of 30389712 in words is "thirty million, three hundred eighty-nine thousand, seven hundred twelve".