340856 has 16 divisors (see below), whose sum is σ = 645840. Its totient is φ = 168640.

The previous prime is 340849. The next prime is 340859. The reversal of 340856 is 658043.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340856.

It is not an unprimeable number, because it can be changed into a prime (340859) 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, 941 + ... + 1251.

It is an arithmetic number, because the mean of its divisors is an integer number (40365).

2³⁴⁰⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

340856 is a deficient number, since it is larger than the sum of its proper divisors (304984).

340856 is a wasteful number, since it uses less digits than its factorization.

340856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 340856 is about 583.8287420126. The cubic root of 340856 is about 69.8538447098.

Adding to 340856 its reverse (658043), we get a palindrome (998899).

The spelling of 340856 in words is "three hundred forty thousand, eight hundred fifty-six".