345328 has 20 divisors (see below), whose sum is σ = 678528. Its totient is φ = 170240.

The previous prime is 345311. The next prime is 345329. The reversal of 345328 is 823543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345329) by changing a digit.

345328 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, 1713 + ... + 1903.

2³⁴⁵³²⁸ is an apocalyptic number.

It is an amenable number.

345328 is a deficient number, since it is larger than the sum of its proper divisors (333200).

345328 is a wasteful number, since it uses less digits than its factorization.

345328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 306 counting only the distinct ones).

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

The square root of 345328 is about 587.6461520337. The cubic root of 345328 is about 70.1580104030.

It can be divided in two parts, 3453 and 28, that added together give a square (3481 = 59²).

The spelling of 345328 in words is "three hundred forty-five thousand, three hundred twenty-eight".