304320340 has 48 divisors (see below), whose sum is σ = 675702720. Its totient is φ = 114808320.

The previous prime is 304320319. The next prime is 304320353. The reversal of 304320340 is 43023403.

It is a super-2 number, since 2×304320340² = 185221738675431200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

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, 89919 + ... + 93241.

It is an arithmetic number, because the mean of its divisors is an integer number (14077140).

Almost surely, 2^304320340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304320340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337851360).

304320340 is an abundant number, since it is smaller than the sum of its proper divisors (371382380).

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

304320340 is a wasteful number, since it uses less digits than its factorization.

304320340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592 (or 3590 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 304320340 is about 17444.7797349236. The cubic root of 304320340 is about 672.6311772229.

Adding to 304320340 its reverse (43023403), we get a palindrome (347343743).

The spelling of 304320340 in words is "three hundred four million, three hundred twenty thousand, three hundred forty".