305421324 has 72 divisors (see below), whose sum is σ = 802504752. Its totient is φ = 89865600.

The previous prime is 305421317. The next prime is 305421329. The reversal of 305421324 is 423124503.

It is a junction number, because it is equal to n+sod(n) for n = 305421294 and 305421303.

It is not an unprimeable number, because it can be changed into a prime (305421329) by changing a digit.

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, 80674 + ... + 84374.

Almost surely, 2^305421324 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 305421324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401252376).

305421324 is an abundant number, since it is smaller than the sum of its proper divisors (497083428).

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

305421324 is a wasteful number, since it uses less digits than its factorization.

305421324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767 (or 3742 counting only the distinct ones).

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

The square root of 305421324 is about 17476.3075047334. The cubic root of 305421324 is about 673.4413595482.

Adding to 305421324 its reverse (423124503), we get a palindrome (728545827).

The spelling of 305421324 in words is "three hundred five million, four hundred twenty-one thousand, three hundred twenty-four".