30885328 has 40 divisors (see below), whose sum is σ = 63745920. Its totient is φ = 14446080.

The previous prime is 30885307. The next prime is 30885329. The reversal of 30885328 is 82358803.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30885329) 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 7 ways as a sum of consecutive naturals, for example, 73503 + ... + 73921.

It is an arithmetic number, because the mean of its divisors is an integer number (1593648).

Almost surely, 2^30885328 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 30885328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31872960).

30885328 is an abundant number, since it is smaller than the sum of its proper divisors (32860592).

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

30885328 is a wasteful number, since it uses less digits than its factorization.

30885328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 30885328 is about 5557.4569723930. The cubic root of 30885328 is about 313.7502442816.

It can be divided in two parts, 30885 and 328, that added together give a palindrome (31213).

The spelling of 30885328 in words is "thirty million, eight hundred eighty-five thousand, three hundred twenty-eight".