345238 has 4 divisors (see below), whose sum is σ = 517860. Its totient is φ = 172618.

The previous prime is 345229. The next prime is 345259. The reversal of 345238 is 832543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 832543 = 101 ⋅8243.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

345238 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 as a sum of consecutive naturals, namely, 86308 + ... + 86311.

It is an arithmetic number, because the mean of its divisors is an integer number (129465).

2³⁴⁵²³⁸ is an apocalyptic number.

345238 is a deficient number, since it is larger than the sum of its proper divisors (172622).

345238 is a wasteful number, since it uses less digits than its factorization.

345238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172621.

The product of its digits is 2880, while the sum is 25.

The square root of 345238 is about 587.5695703489. The cubic root of 345238 is about 70.1519149715.

The spelling of 345238 in words is "three hundred forty-five thousand, two hundred thirty-eight".