30304221 has 16 divisors (see below), whose sum is σ = 43684800. Its totient is φ = 18620928.

The previous prime is 30304187. The next prime is 30304231. The reversal of 30304221 is 12240303.

It is not a de Polignac number, because 30304221 - 2⁷ = 30304093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30304221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30304231) 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 15 ways as a sum of consecutive naturals, for example, 5076 + ... + 9293.

It is an arithmetic number, because the mean of its divisors is an integer number (2730300).

Almost surely, 2^30304221 is an apocalyptic number.

It is an amenable number.

30304221 is a deficient number, since it is larger than the sum of its proper divisors (13380579).

30304221 is a wasteful number, since it uses less digits than its factorization.

30304221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14428.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30304221 is about 5504.9269749925. The cubic root of 30304221 is about 311.7700372349.

Adding to 30304221 its reverse (12240303), we get a palindrome (42544524).

The spelling of 30304221 in words is "thirty million, three hundred four thousand, two hundred twenty-one".