320744 has 8 divisors (see below), whose sum is σ = 601410. Its totient is φ = 160368.

The previous prime is 320741. The next prime is 320759. The reversal of 320744 is 447023.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 315844 + 4900 = 562^2 + 70^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 20039 + ... + 20054.

2³²⁰⁷⁴⁴ is an apocalyptic number.

It is an amenable number.

320744 is a deficient number, since it is larger than the sum of its proper divisors (280666).

320744 is a wasteful number, since it uses less digits than its factorization.

320744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40099 (or 40095 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 320744 is about 566.3426524640. The cubic root of 320744 is about 68.4520060922.

Adding to 320744 its reverse (447023), we get a palindrome (767767).

The spelling of 320744 in words is "three hundred twenty thousand, seven hundred forty-four", and thus it is an iban number.