343404 has 18 divisors (see below), whose sum is σ = 868140. Its totient is φ = 114456.

The previous prime is 343393. The next prime is 343411. The reversal of 343404 is 404343.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343404.

It is an unprimeable number.

343404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4734 + ... + 4805.

It is an arithmetic number, because the mean of its divisors is an integer number (48230).

2³⁴³⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

343404 is an abundant number, since it is smaller than the sum of its proper divisors (524736).

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

343404 is a wasteful number, since it uses less digits than its factorization.

343404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9549 (or 9544 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 343404 is about 586.0068258988. The cubic root of 343404 is about 70.0274722100.

Adding to 343404 its reverse (404343), we get a palindrome (747747).

It can be divided in two parts, 343 and 404, that added together give a palindrome (747).

The spelling of 343404 in words is "three hundred forty-three thousand, four hundred four", and thus it is an iban number.