305730222 has 32 divisors (see below), whose sum is σ = 703852800. Its totient is φ = 86721408.

The previous prime is 305730221. The next prime is 305730233. The reversal of 305730222 is 222037503.

It is a junction number, because it is equal to n+sod(n) for n = 305730192 and 305730201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305730221) 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 in 15 ways as a sum of consecutive naturals, for example, 20347 + ... + 32022.

It is an arithmetic number, because the mean of its divisors is an integer number (21995400).

Almost surely, 2^305730222 is an apocalyptic number.

305730222 is an abundant number, since it is smaller than the sum of its proper divisors (398122578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305730222 is a wasteful number, since it uses less digits than its factorization.

305730222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52520.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 305730222 is about 17485.1428933252. The cubic root of 305730222 is about 673.6683188131.

Adding to 305730222 its reverse (222037503), we get a palindrome (527767725).

The spelling of 305730222 in words is "three hundred five million, seven hundred thirty thousand, two hundred twenty-two".