347828 has 12 divisors (see below), whose sum is σ = 655620. Its totient is φ = 160512.

The previous prime is 347821. The next prime is 347849. The reversal of 347828 is 828743.

347828 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 169744 + 178084 = 412^2 + 422^2 .

It is a junction number, because it is equal to n+sod(n) for n = 347794 and 347803.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 347828.

It is not an unprimeable number, because it can be changed into a prime (347821) by changing a digit.

347828 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, 3293 + ... + 3396.

It is an arithmetic number, because the mean of its divisors is an integer number (54635).

2³⁴⁷⁸²⁸ is an apocalyptic number.

It is an amenable number.

347828 is a deficient number, since it is larger than the sum of its proper divisors (307792).

347828 is a wasteful number, since it uses less digits than its factorization.

347828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6706 (or 6704 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 347828 is about 589.7694464789. The cubic root of 347828 is about 70.3269063156.

The spelling of 347828 in words is "three hundred forty-seven thousand, eight hundred twenty-eight".