345538 has 8 divisors (see below), whose sum is σ = 521532. Its totient is φ = 171696.

The previous prime is 345533. The next prime is 345547. The reversal of 345538 is 835543.

It can be written as a sum of positive squares in 2 ways, for example, as 263169 + 82369 = 513^2 + 287^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (345533) 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, 45 + ... + 832.

2³⁴⁵⁵³⁸ is an apocalyptic number.

345538 is a deficient number, since it is larger than the sum of its proper divisors (175994).

345538 is a wasteful number, since it uses less digits than its factorization.

345538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076.

The product of its digits is 7200, while the sum is 28.

The square root of 345538 is about 587.8248038319. The cubic root of 345538 is about 70.1722289592.

The spelling of 345538 in words is "three hundred forty-five thousand, five hundred thirty-eight".