30387641 has 2 divisors, whose sum is σ = 30387642. Its totient is φ = 30387640.

The previous prime is 30387611. The next prime is 30387647. The reversal of 30387641 is 14678303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30250000 + 137641 = 5500^2 + 371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30387641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30387598 and 30387607.

It is not a weakly prime, because it can be changed into another prime (30387647) 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, 15193820 + 15193821.

It is an arithmetic number, because the mean of its divisors is an integer number (15193821).

Almost surely, 2^30387641 is an apocalyptic number.

It is an amenable number.

30387641 is a deficient number, since it is larger than the sum of its proper divisors (1).

30387641 is an equidigital number, since it uses as much as digits as its factorization.

30387641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 30387641 is about 5512.4986167799. The cubic root of 30387641 is about 312.0558503185.

The spelling of 30387641 in words is "thirty million, three hundred eighty-seven thousand, six hundred forty-one".