30260393 has 2 divisors, whose sum is σ = 30260394. Its totient is φ = 30260392.

The previous prime is 30260359. The next prime is 30260401. The reversal of 30260393 is 39306203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18344089 + 11916304 = 4283^2 + 3452^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30260393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30260303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15130196 + 15130197.

It is an arithmetic number, because the mean of its divisors is an integer number (15130197).

Almost surely, 2^30260393 is an apocalyptic number.

It is an amenable number.

30260393 is a deficient number, since it is larger than the sum of its proper divisors (1).

30260393 is an equidigital number, since it uses as much as digits as its factorization.

30260393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 26.

The square root of 30260393 is about 5500.9447370429. The cubic root of 30260393 is about 311.6196637949.

Adding to 30260393 its reverse (39306203), we get a palindrome (69566596).

The spelling of 30260393 in words is "thirty million, two hundred sixty thousand, three hundred ninety-three".