343538 has 16 divisors (see below), whose sum is σ = 565656. Its totient is φ = 155520.

The previous prime is 343531. The next prime is 343543. The reversal of 343538 is 835343.

It can be written as a sum of positive squares in 4 ways, for example, as 134689 + 208849 = 367^2 + 457^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (343531) by changing a digit.

343538 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 7 ways as a sum of consecutive naturals, for example, 1808 + ... + 1988.

2³⁴³⁵³⁸ is an apocalyptic number.

343538 is a deficient number, since it is larger than the sum of its proper divisors (222118).

343538 is a wasteful number, since it uses less digits than its factorization.

343538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269.

The product of its digits is 4320, while the sum is 26.

The square root of 343538 is about 586.1211478867. The cubic root of 343538 is about 70.0365795210.

The spelling of 343538 in words is "three hundred forty-three thousand, five hundred thirty-eight".