340406 has 8 divisors (see below), whose sum is σ = 557064. Its totient is φ = 154720.

The previous prime is 340397. The next prime is 340409. The reversal of 340406 is 604043.

It is a sphenic number, since it is the product of 3 distinct primes.

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 340406.

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, 7715 + ... + 7758.

It is an arithmetic number, because the mean of its divisors is an integer number (69633).

2³⁴⁰⁴⁰⁶ is an apocalyptic number.

340406 is a deficient number, since it is larger than the sum of its proper divisors (216658).

340406 is a wasteful number, since it uses less digits than its factorization.

340406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15486.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 340406 is about 583.4432277437. The cubic root of 340406 is about 69.8230906930.

Adding to 340406 its reverse (604043), we get a palindrome (944449).

The spelling of 340406 in words is "three hundred forty thousand, four hundred six".