221034304 has 28 divisors (see below), whose sum is σ = 441061348. Its totient is φ = 109900800.

The previous prime is 221034299. The next prime is 221034311. The reversal of 221034304 is 403430122.

It can be written as a sum of positive squares in 2 ways, for example, as 15054400 + 205979904 = 3880^2 + 14352^2 .

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2044 + ... + 21124.

It is an arithmetic number, because the mean of its divisors is an integer number (15752191).

Almost surely, 2^221034304 is an apocalyptic number.

It is an amenable number.

221034304 is a deficient number, since it is larger than the sum of its proper divisors (220027044).

221034304 is a wasteful number, since it uses less digits than its factorization.

221034304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19274 (or 19264 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 221034304 is about 14867.2224709258. Note that the first 3 decimals coincide. The cubic root of 221034304 is about 604.6256400415.

Adding to 221034304 its reverse (403430122), we get a palindrome (624464426).

The spelling of 221034304 in words is "two hundred twenty-one million, thirty-four thousand, three hundred four".