30028280 has 16 divisors (see below), whose sum is σ = 67563720. Its totient is φ = 12011296.

The previous prime is 30028279. The next prime is 30028289. The reversal of 30028280 is 8282003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30028289) 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 3 ways as a sum of consecutive naturals, for example, 375314 + ... + 375393.

Almost surely, 2^30028280 is an apocalyptic number.

It is an amenable number.

30028280 is an abundant number, since it is smaller than the sum of its proper divisors (37535440).

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

30028280 is a wasteful number, since it uses less digits than its factorization.

30028280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750718 (or 750714 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 30028280 is about 5479.8065659291. The cubic root of 30028280 is about 310.8208560823.

The spelling of 30028280 in words is "thirty million, twenty-eight thousand, two hundred eighty".