340540 has 12 divisors (see below), whose sum is σ = 715176. Its totient is φ = 136208.

The previous prime is 340519. The next prime is 340541. The reversal of 340540 is 45043.

340540 is a modest number, since divided by 540 gives 340 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340541) 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, 8494 + ... + 8533.

It is an arithmetic number, because the mean of its divisors is an integer number (59598).

2³⁴⁰⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

340540 is an abundant number, since it is smaller than the sum of its proper divisors (374636).

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

340540 is a wasteful number, since it uses less digits than its factorization.

340540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17036 (or 17034 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 340540 is about 583.5580519537. The cubic root of 340540 is about 69.8322513881.

Adding to 340540 its reverse (45043), we get a palindrome (385583).

The spelling of 340540 in words is "three hundred forty thousand, five hundred forty".