346378 has 4 divisors (see below), whose sum is σ = 519570. Its totient is φ = 173188.

The previous prime is 346373. The next prime is 346391. The reversal of 346378 is 873643.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 294849 + 51529 = 543^2 + 227^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (346373) by changing a digit.

346378 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86593 + ... + 86596.

2³⁴⁶³⁷⁸ is an apocalyptic number.

346378 is a deficient number, since it is larger than the sum of its proper divisors (173192).

346378 is a wasteful number, since it uses less digits than its factorization.

346378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173191.

The product of its digits is 12096, while the sum is 31.

The square root of 346378 is about 588.5388687249. The cubic root of 346378 is about 70.2290456451.

The spelling of 346378 in words is "three hundred forty-six thousand, three hundred seventy-eight".