343904 has 24 divisors (see below), whose sum is σ = 739368. Its totient is φ = 156160.

The previous prime is 343901. The next prime is 343913. The reversal of 343904 is 409343.

It is a super-2 number, since 2×343904² = 236539922432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 343904.

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 343904.

It is not an unprimeable number, because it can be changed into a prime (343901) 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, 137 + ... + 840.

It is an arithmetic number, because the mean of its divisors is an integer number (30807).

2³⁴³⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

343904 is an abundant number, since it is smaller than the sum of its proper divisors (395464).

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

343904 is a wasteful number, since it uses less digits than its factorization.

343904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 343904 is about 586.4332869134. The cubic root of 343904 is about 70.0614426514.

The spelling of 343904 in words is "three hundred forty-three thousand, nine hundred four".