30402393 has 12 divisors (see below), whose sum is σ = 47154960. Its totient is φ = 17372712.

The previous prime is 30402367. The next prime is 30402397. The reversal of 30402393 is 39320403.

It is not a de Polignac number, because 30402393 - 2¹⁰ = 30401369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30402397) 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 in 11 ways as a sum of consecutive naturals, for example, 103263 + ... + 103556.

It is an arithmetic number, because the mean of its divisors is an integer number (3929580).

Almost surely, 2^30402393 is an apocalyptic number.

It is an amenable number.

30402393 is a deficient number, since it is larger than the sum of its proper divisors (16752567).

30402393 is a wasteful number, since it uses less digits than its factorization.

30402393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206836 (or 206829 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 30402393 is about 5513.8365046490. The cubic root of 30402393 is about 312.1063390810.

Adding to 30402393 its reverse (39320403), we get a palindrome (69722796).

The spelling of 30402393 in words is "thirty million, four hundred two thousand, three hundred ninety-three".