343428 has 12 divisors (see below), whose sum is σ = 801360. Its totient is φ = 114472.

The previous prime is 343423. The next prime is 343433. The reversal of 343428 is 824343.

343428 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (343423) and next prime (343433).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 343398 and 343407.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343428.

It is not an unprimeable number, because it can be changed into a prime (343423) by changing a digit.

343428 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14298 + ... + 14321.

It is an arithmetic number, because the mean of its divisors is an integer number (66780).

2³⁴³⁴²⁸ is an apocalyptic number.

It is an amenable number.

343428 is an abundant number, since it is smaller than the sum of its proper divisors (457932).

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

343428 is a wasteful number, since it uses less digits than its factorization.

343428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28626 (or 28624 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 343428 is about 586.0273031182. The cubic root of 343428 is about 70.0291035443.

The spelling of 343428 in words is "three hundred forty-three thousand, four hundred twenty-eight".