323405420 has 48 divisors (see below), whose sum is σ = 733762848. Its totient is φ = 119024640.

The previous prime is 323405413. The next prime is 323405443. The reversal of 323405420 is 24504323.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85775 + ... + 89465.

It is an arithmetic number, because the mean of its divisors is an integer number (15286726).

Almost surely, 2^323405420 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 323405420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366881424).

323405420 is an abundant number, since it is smaller than the sum of its proper divisors (410357428).

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

323405420 is a wasteful number, since it uses less digits than its factorization.

323405420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050 (or 4048 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 323405420 is about 17983.4763046526. The cubic root of 323405420 is about 686.4081498762.

Adding to 323405420 its reverse (24504323), we get a palindrome (347909743).

The spelling of 323405420 in words is "three hundred twenty-three million, four hundred five thousand, four hundred twenty".