30028249 has 2 divisors, whose sum is σ = 30028250. Its totient is φ = 30028248.

The previous prime is 30028237. The next prime is 30028259. The reversal of 30028249 is 94282003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19184400 + 10843849 = 4380^2 + 3293^2 .

It is a cyclic number.

It is not a de Polignac number, because 30028249 - 2⁵ = 30028217 is a prime.

It is not a weakly prime, because it can be changed into another prime (30028259) 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 as a sum of consecutive naturals, namely, 15014124 + 15014125.

It is an arithmetic number, because the mean of its divisors is an integer number (15014125).

Almost surely, 2^30028249 is an apocalyptic number.

It is an amenable number.

30028249 is a deficient number, since it is larger than the sum of its proper divisors (1).

30028249 is an equidigital number, since it uses as much as digits as its factorization.

30028249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 30028249 is about 5479.8037373614. The cubic root of 30028249 is about 310.8207491226.

The spelling of 30028249 in words is "thirty million, twenty-eight thousand, two hundred forty-nine".