320235420 has 96 divisors (see below), whose sum is σ = 923630400. Its totient is φ = 82851840.

The previous prime is 320235401. The next prime is 320235437. The reversal of 320235420 is 24532023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 858354 + ... + 858726.

It is an arithmetic number, because the mean of its divisors is an integer number (9621150).

Almost surely, 2^320235420 is an apocalyptic number.

320235420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320235420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461815200).

320235420 is an abundant number, since it is smaller than the sum of its proper divisors (603394980).

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

320235420 is a wasteful number, since it uses less digits than its factorization.

320235420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 773 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 320235420 is about 17895.1227992434. The cubic root of 320235420 is about 684.1580719447.

Adding to 320235420 its reverse (24532023), we get a palindrome (344767443).

The spelling of 320235420 in words is "three hundred twenty million, two hundred thirty-five thousand, four hundred twenty".