223306730 has 16 divisors (see below), whose sum is σ = 425596680. Its totient is φ = 84068352.

The previous prime is 223306723. The next prime is 223306739. The reversal of 223306730 is 37603322.

223306730 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 164891281 + 58415449 = 12841^2 + 7643^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 223306730.

It is not an unprimeable number, because it can be changed into a prime (223306739) 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 7 ways as a sum of consecutive naturals, for example, 656615 + ... + 656954.

Almost surely, 2^223306730 is an apocalyptic number.

223306730 is a deficient number, since it is larger than the sum of its proper divisors (202289950).

223306730 is a wasteful number, since it uses less digits than its factorization.

223306730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313593.

The product of its (nonzero) digits is 4536, while the sum is 26.

The square root of 223306730 is about 14943.4510739655. The cubic root of 223306730 is about 606.6906064028.

The spelling of 223306730 in words is "two hundred twenty-three million, three hundred six thousand, seven hundred thirty".