30034728 has 48 divisors (see below), whose sum is σ = 81892980. Its totient is φ = 9944064.

The previous prime is 30034727. The next prime is 30034811. The reversal of 30034728 is 82743003.

It can be written as a sum of positive squares in 2 ways, for example, as 30008484 + 26244 = 5478^2 + 162^2 .

It is not an unprimeable number, because it can be changed into a prime (30034723) 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 11 ways as a sum of consecutive naturals, for example, 9976 + ... + 12632.

Almost surely, 2^30034728 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 30034728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40946490).

30034728 is an abundant number, since it is smaller than the sum of its proper divisors (51858252).

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

30034728 is a wasteful number, since it uses less digits than its factorization.

30034728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 30034728 is about 5480.3948762840. The cubic root of 30034728 is about 310.8431021055.

The spelling of 30034728 in words is "thirty million, thirty-four thousand, seven hundred twenty-eight".