30327728 has 40 divisors (see below), whose sum is σ = 63687888. Its totient is φ = 13934592.

The previous prime is 30327709. The next prime is 30327749. The reversal of 30327728 is 82772303.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30327694 and 30327703.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10400 + ... + 12992.

Almost surely, 2^30327728 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 30327728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31843944).

30327728 is an abundant number, since it is smaller than the sum of its proper divisors (33360160).

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

30327728 is a wasteful number, since it uses less digits than its factorization.

30327728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661 (or 2655 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 30327728 is about 5507.0616484655. The cubic root of 30327728 is about 311.8506297933.

The spelling of 30327728 in words is "thirty million, three hundred twenty-seven thousand, seven hundred twenty-eight".