30120829 has 2 divisors, whose sum is σ = 30120830. Its totient is φ = 30120828.

The previous prime is 30120817. The next prime is 30120847. The reversal of 30120829 is 92802103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28676025 + 1444804 = 5355^2 + 1202^2 .

It is a cyclic number.

It is not a de Polignac number, because 30120829 - 2¹³ = 30112637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30120859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060414 + 15060415.

It is an arithmetic number, because the mean of its divisors is an integer number (15060415).

Almost surely, 2^30120829 is an apocalyptic number.

It is an amenable number.

30120829 is a deficient number, since it is larger than the sum of its proper divisors (1).

30120829 is an equidigital number, since it uses as much as digits as its factorization.

30120829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 30120829 is about 5488.2446191838. The cubic root of 30120829 is about 311.1398515635.

The spelling of 30120829 in words is "thirty million, one hundred twenty thousand, eight hundred twenty-nine".