347478 has 16 divisors (see below), whose sum is σ = 719280. Its totient is φ = 111776.

The previous prime is 347443. The next prime is 347489. The reversal of 347478 is 874743.

It is a happy number.

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

It is a Curzon number.

It is a nialpdrome in base 13.

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 347478.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825 + ... + 1172.

It is an arithmetic number, because the mean of its divisors is an integer number (44955).

2³⁴⁷⁴⁷⁸ is an apocalyptic number.

347478 is an abundant number, since it is smaller than the sum of its proper divisors (371802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

347478 is a wasteful number, since it uses less digits than its factorization.

347478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031.

The product of its digits is 18816, while the sum is 33.

The square root of 347478 is about 589.4726456758. The cubic root of 347478 is about 70.3033097124.

Adding to 347478 its reverse (874743), we get a palindrome (1222221).

The spelling of 347478 in words is "three hundred forty-seven thousand, four hundred seventy-eight".