40340 has 12 divisors (see below), whose sum is σ = 84756. Its totient is φ = 16128.

The previous prime is 40289. The next prime is 40343. The reversal of 40340 is 4304.

40340 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 24964 + 15376 = 158^2 + 124^2 .

40340 is strictly pandigital in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40343) by changing a digit.

40340 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989 + ... + 1028.

It is an arithmetic number, because the mean of its divisors is an integer number (7063).

2⁴⁰³⁴⁰ is an apocalyptic number.

It is an amenable number.

40340 is an abundant number, since it is smaller than the sum of its proper divisors (44416).

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 (42378).

40340 is a wasteful number, since it uses less digits than its factorization.

40340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026 (or 2024 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 40340 is about 200.8482013860. The cubic root of 40340 is about 34.2961443135.

Adding to 40340 its reverse (4304), we get a palindrome (44644).

The spelling of 40340 in words is "forty thousand, three hundred forty", and thus it is an iban number.