320335040 has 84 divisors (see below), whose sum is σ = 777825216. Its totient is φ = 125655552.

The previous prime is 320335019. The next prime is 320335087. The reversal of 320335040 is 40533023.

It is a super-2 number, since 2×320335040² = 205229075703603200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1436369 + ... + 1436591.

It is an arithmetic number, because the mean of its divisors is an integer number (9259824).

Almost surely, 2^320335040 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 320335040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388912608).

320335040 is an abundant number, since it is smaller than the sum of its proper divisors (457490176).

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

320335040 is an equidigital number, since it uses as much as digits as its factorization.

320335040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 320335040 is about 17897.9060227726. The cubic root of 320335040 is about 684.2290080505.

Adding to 320335040 its reverse (40533023), we get a palindrome (360868063).

It can be divided in two parts, 32033 and 5040, that added together give a palindrome (37073).

The spelling of 320335040 in words is "three hundred twenty million, three hundred thirty-five thousand, forty".