30828130 has 16 divisors (see below), whose sum is σ = 55587384. Its totient is φ = 12309760.

The previous prime is 30828121. The next prime is 30828163. The reversal of 30828130 is 3182803.

It can be written as a sum of positive squares in 4 ways, for example, as 21446161 + 9381969 = 4631^2 + 3063^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30828095 and 30828104.

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, 4170 + ... + 8890.

Almost surely, 2^30828130 is an apocalyptic number.

30828130 is a deficient number, since it is larger than the sum of its proper divisors (24759254).

30828130 is a wasteful number, since it uses less digits than its factorization.

30828130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5381.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 30828130 is about 5552.3085288914. The cubic root of 30828130 is about 313.5564416217.

The spelling of 30828130 in words is "thirty million, eight hundred twenty-eight thousand, one hundred thirty".