240340 has 24 divisors (see below), whose sum is σ = 515592. Its totient is φ = 94080.

The previous prime is 240319. The next prime is 240341. The reversal of 240340 is 43042.

It can be written as a sum of positive squares in 4 ways, for example, as 26896 + 213444 = 164^2 + 462^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 240340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1122 + ... + 1318.

It is an arithmetic number, because the mean of its divisors is an integer number (21483).

2²⁴⁰³⁴⁰ is an apocalyptic number.

240340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240340 is an abundant number, since it is smaller than the sum of its proper divisors (275252).

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

240340 is a wasteful number, since it uses less digits than its factorization.

240340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 240340 is about 490.2448367908. The cubic root of 240340 is about 62.1739823569.

Adding to 240340 its reverse (43042), we get a palindrome (283382).

The spelling of 240340 in words is "two hundred forty thousand, three hundred forty", and thus it is an iban number.