320740 has 48 divisors (see below), whose sum is σ = 806400. Its totient is φ = 104832.

The previous prime is 320713. The next prime is 320741. The reversal of 320740 is 47023.

320740 = T₁₆₉ + T₁₇₀ + ... + T₁₈₈.

320740 is nontrivially palindromic in base 16.

320740 is an undulating number in base 16.

320740 is a modest number, since divided by 740 gives 320 as remainder.

It is not an unprimeable number, because it can be changed into a prime (320741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4021 + ... + 4099.

It is an arithmetic number, because the mean of its divisors is an integer number (16800).

2³²⁰⁷⁴⁰ 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 320740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403200).

320740 is an abundant number, since it is smaller than the sum of its proper divisors (485660).

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

320740 is a wasteful number, since it uses less digits than its factorization.

320740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 320740 is about 566.3391210220. The cubic root of 320740 is about 68.4517215359.

Adding to 320740 its reverse (47023), we get a palindrome (367763).

The spelling of 320740 in words is "three hundred twenty thousand, seven hundred forty", and thus it is an iban number.