30208394 has 4 divisors (see below), whose sum is σ = 45312594. Its totient is φ = 15104196.

The previous prime is 30208379. The next prime is 30208397. The reversal of 30208394 is 49380203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19404025 + 10804369 = 4405^2 + 3287^2 .

It is not an unprimeable number, because it can be changed into a prime (30208397) 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, 7552097 + ... + 7552100.

Almost surely, 2^30208394 is an apocalyptic number.

30208394 is a deficient number, since it is larger than the sum of its proper divisors (15104200).

30208394 is a wasteful number, since it uses less digits than its factorization.

30208394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15104199.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 30208394 is about 5496.2163348980. The cubic root of 30208394 is about 311.4410672899.

Adding to 30208394 its reverse (49380203), we get a palindrome (79588597).

The spelling of 30208394 in words is "thirty million, two hundred eight thousand, three hundred ninety-four".