30684293 has 2 divisors, whose sum is σ = 30684294. Its totient is φ = 30684292.

The previous prime is 30684289. The next prime is 30684317. The reversal of 30684293 is 39248603.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20232004 + 10452289 = 4498^2 + 3233^2 .

It is a cyclic number.

It is not a de Polignac number, because 30684293 - 2² = 30684289 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30684793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15342146 + 15342147.

It is an arithmetic number, because the mean of its divisors is an integer number (15342147).

Almost surely, 2^30684293 is an apocalyptic number.

It is an amenable number.

30684293 is a deficient number, since it is larger than the sum of its proper divisors (1).

30684293 is an equidigital number, since it uses as much as digits as its factorization.

30684293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 30684293 is about 5539.3404842093. The cubic root of 30684293 is about 313.0680203437.

The spelling of 30684293 in words is "thirty million, six hundred eighty-four thousand, two hundred ninety-three".