305222226 has 32 divisors (see below), whose sum is σ = 616412160. Its totient is φ = 100751376.

The previous prime is 305222219. The next prime is 305222231. The reversal of 305222226 is 622222503.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 305222196 and 305222205.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 419475 + ... + 420201.

It is an arithmetic number, because the mean of its divisors is an integer number (19262880).

Almost surely, 2^305222226 is an apocalyptic number.

305222226 is an abundant number, since it is smaller than the sum of its proper divisors (311189934).

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

305222226 is a wasteful number, since it uses less digits than its factorization.

305222226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 305222226 is about 17470.6103499563. The cubic root of 305222226 is about 673.2949934601.

Adding to 305222226 its reverse (622222503), we get a palindrome (927444729).

The spelling of 305222226 in words is "three hundred five million, two hundred twenty-two thousand, two hundred twenty-six".