30307649 has 2 divisors, whose sum is σ = 30307650. Its totient is φ = 30307648.

The previous prime is 30307633. The next prime is 30307681. The reversal of 30307649 is 94670303.

It is an a-pointer prime, because the next prime (30307681) can be obtained adding 30307649 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29506624 + 801025 = 5432^2 + 895^2 .

It is a cyclic number.

It is not a de Polignac number, because 30307649 - 2⁴ = 30307633 is a prime.

It is not a weakly prime, because it can be changed into another prime (30307609) 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, 15153824 + 15153825.

It is an arithmetic number, because the mean of its divisors is an integer number (15153825).

Almost surely, 2^30307649 is an apocalyptic number.

It is an amenable number.

30307649 is a deficient number, since it is larger than the sum of its proper divisors (1).

30307649 is an equidigital number, since it uses as much as digits as its factorization.

30307649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 30307649 is about 5505.2383236332. The cubic root of 30307649 is about 311.7817925543.

The spelling of 30307649 in words is "thirty million, three hundred seven thousand, six hundred forty-nine".