340904 has 16 divisors (see below), whose sum is σ = 654720. Its totient is φ = 166320.

The previous prime is 340903. The next prime is 340909. The reversal of 340904 is 409043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340903) 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, 152 + ... + 839.

It is an arithmetic number, because the mean of its divisors is an integer number (40920).

2³⁴⁰⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

340904 is a deficient number, since it is larger than the sum of its proper divisors (313816).

340904 is a wasteful number, since it uses less digits than its factorization.

340904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 340904 is about 583.8698485108. The cubic root of 340904 is about 69.8571235404.

Adding to 340904 its reverse (409043), we get a palindrome (749947).

The spelling of 340904 in words is "three hundred forty thousand, nine hundred four".