30008028 has 12 divisors (see below), whose sum is σ = 70018760. Its totient is φ = 10002672.

The previous prime is 30008021. The next prime is 30008047. The reversal of 30008028 is 82080003.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 30007995 and 30008013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30008021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250323 + ... + 1250346.

Almost surely, 2^30008028 is an apocalyptic number.

It is an amenable number.

30008028 is an abundant number, since it is smaller than the sum of its proper divisors (40010732).

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

30008028 is a wasteful number, since it uses less digits than its factorization.

30008028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500676 (or 2500674 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 30008028 is about 5477.9583788123. The cubic root of 30008028 is about 310.7509646374.

The spelling of 30008028 in words is "thirty million, eight thousand, twenty-eight".