304420 has 24 divisors (see below), whose sum is σ = 661248. Its totient is φ = 117600.

The previous prime is 304417. The next prime is 304429. The reversal of 304420 is 24403.

It is a plaindrome in base 8.

It is a zygodrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 304420.

It is not an unprimeable number, because it can be changed into a prime (304429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375 + ... + 865.

It is an arithmetic number, because the mean of its divisors is an integer number (27552).

2³⁰⁴⁴²⁰ 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 304420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330624).

304420 is an abundant number, since it is smaller than the sum of its proper divisors (356828).

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

304420 is a wasteful number, since it uses less digits than its factorization.

304420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 304420 is about 551.7426936535. The cubic root of 304420 is about 67.2704594494.

Adding to 304420 its reverse (24403), we get a palindrome (328823).

The spelling of 304420 in words is "three hundred four thousand, four hundred twenty", and thus it is an iban number.