305840322 has 48 divisors (see below), whose sum is σ = 692410680. Its totient is φ = 97440000.

The previous prime is 305840317. The next prime is 305840377. The reversal of 305840322 is 223048503.

It can be written as a sum of positive squares in 4 ways, for example, as 288626121 + 17214201 = 16989^2 + 4149^2 .

It is a super-2 number, since 2×305840322² = 187076605122127368, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 49822 + ... + 55622.

Almost surely, 2^305840322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305840322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346205340).

305840322 is an abundant number, since it is smaller than the sum of its proper divisors (386570358).

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

305840322 is a wasteful number, since it uses less digits than its factorization.

305840322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5939 (or 5936 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 305840322 is about 17488.2909971215. The cubic root of 305840322 is about 673.7491765703.

Adding to 305840322 its reverse (223048503), we get a palindrome (528888825).

The spelling of 305840322 in words is "three hundred five million, eight hundred forty thousand, three hundred twenty-two".