71320 has 16 divisors (see below), whose sum is σ = 160560. Its totient is φ = 28512.

The previous prime is 71317. The next prime is 71327. The reversal of 71320 is 2317.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 71320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852 + ... + 931.

It is an arithmetic number, because the mean of its divisors is an integer number (10035).

2⁷¹³²⁰ is an apocalyptic number.

It is an amenable number.

71320 is an abundant number, since it is smaller than the sum of its proper divisors (89240).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80280).

71320 is a wasteful number, since it uses less digits than its factorization.

71320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794 (or 1790 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 71320 is about 267.0580461248. The cubic root of 71320 is about 41.4702937358.

Adding to 71320 its reverse (2317), we get a palindrome (73637).

The spelling of 71320 in words is "seventy-one thousand, three hundred twenty", and thus it is an iban number.