320140 has 12 divisors (see below), whose sum is σ = 672336. Its totient is φ = 128048.

The previous prime is 320119. The next prime is 320141. The reversal of 320140 is 41023.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (320141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7984 + ... + 8023.

It is an arithmetic number, because the mean of its divisors is an integer number (56028).

2³²⁰¹⁴⁰ is an apocalyptic number.

It is an amenable number.

320140 is an abundant number, since it is smaller than the sum of its proper divisors (352196).

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

320140 is a wasteful number, since it uses less digits than its factorization.

320140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16016 (or 16014 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 320140 is about 565.8091551044. The cubic root of 320140 is about 68.4090112724.

Adding to 320140 its reverse (41023), we get a palindrome (361163).

The spelling of 320140 in words is "three hundred twenty thousand, one hundred forty", and thus it is an iban number.