220730443 has 2 divisors, whose sum is σ = 220730444. Its totient is φ = 220730442.

The previous prime is 220730401. The next prime is 220730459. The reversal of 220730443 is 344037022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220730443 is a prime.

It is not a weakly prime, because it can be changed into another prime (220730143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110365221 + 110365222.

It is an arithmetic number, because the mean of its divisors is an integer number (110365222).

Almost surely, 2^220730443 is an apocalyptic number.

220730443 is a deficient number, since it is larger than the sum of its proper divisors (1).

220730443 is an equidigital number, since it uses as much as digits as its factorization.

220730443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 220730443 is about 14856.9997980750. Note that the first 3 decimals coincide. The cubic root of 220730443 is about 604.3484486710.

Adding to 220730443 its reverse (344037022), we get a palindrome (564767465).

The spelling of 220730443 in words is "two hundred twenty million, seven hundred thirty thousand, four hundred forty-three".