340408 has 16 divisors (see below), whose sum is σ = 676080. Its totient is φ = 160128.

The previous prime is 340397. The next prime is 340409. The reversal of 340408 is 804043.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340409) 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, 1116 + ... + 1387.

It is an arithmetic number, because the mean of its divisors is an integer number (42255).

2³⁴⁰⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

340408 is a deficient number, since it is larger than the sum of its proper divisors (335672).

340408 is a wasteful number, since it uses less digits than its factorization.

340408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526 (or 2522 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 340408 is about 583.4449417040. Note that the first 3 decimals coincide. The cubic root of 340408 is about 69.8232274375.

The spelling of 340408 in words is "three hundred forty thousand, four hundred eight".