347878 has 8 divisors (see below), whose sum is σ = 524520. Its totient is φ = 173040.

The previous prime is 347873. The next prime is 347887. The reversal of 347878 is 878743.

347878 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253 + ... + 871.

It is an arithmetic number, because the mean of its divisors is an integer number (65565).

2³⁴⁷⁸⁷⁸ is an apocalyptic number.

347878 is a deficient number, since it is larger than the sum of its proper divisors (176642).

347878 is a wasteful number, since it uses less digits than its factorization.

347878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902.

The product of its digits is 37632, while the sum is 37.

The square root of 347878 is about 589.8118344014. The cubic root of 347878 is about 70.3302759665.

It can be divided in two parts, 347 and 878, that added together give a triangular number (1225 = T₄₉).

The spelling of 347878 in words is "three hundred forty-seven thousand, eight hundred seventy-eight".