320073 has 16 divisors (see below), whose sum is σ = 477120. Its totient is φ = 189504.

The previous prime is 320063. The next prime is 320081. The reversal of 320073 is 370023.

It is not a de Polignac number, because 320073 - 2⁴ = 320057 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320073.

It is not an unprimeable number, because it can be changed into a prime (320053) 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, 990 + ... + 1272.

It is an arithmetic number, because the mean of its divisors is an integer number (29820).

2³²⁰⁰⁷³ is an apocalyptic number.

It is an amenable number.

320073 is a deficient number, since it is larger than the sum of its proper divisors (157047).

320073 is a wasteful number, since it uses less digits than its factorization.

320073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328.

The product of its (nonzero) digits is 126, while the sum is 15.

The square root of 320073 is about 565.7499447636. The cubic root of 320073 is about 68.4042386484.

Adding to 320073 its reverse (370023), we get a palindrome (690096).

The spelling of 320073 in words is "three hundred twenty thousand, seventy-three", and thus it is an iban number.