30686016 has 56 divisors (see below), whose sum is σ = 81731104. Its totient is φ = 10160640.

The previous prime is 30686011. The next prime is 30686021. The reversal of 30686016 is 61068603.

It is an interprime number because it is at equal distance from previous prime (30686011) and next prime (30686021).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30686011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34311 + ... + 35193.

It is an arithmetic number, because the mean of its divisors is an integer number (1459484).

Almost surely, 2^30686016 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 30686016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40865552).

30686016 is an abundant number, since it is smaller than the sum of its proper divisors (51045088).

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

30686016 is a wasteful number, since it uses less digits than its factorization.

30686016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 30686016 is about 5539.4960059558. The cubic root of 30686016 is about 313.0738800855.

The spelling of 30686016 in words is "thirty million, six hundred eighty-six thousand, sixteen".