396178 has 8 divisors (see below), whose sum is σ = 599868. Its totient is φ = 196224.

The previous prime is 396173. The next prime is 396181. The reversal of 396178 is 871693.

It can be written as a sum of positive squares in 2 ways, for example, as 257049 + 139129 = 507^2 + 373^2 .

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

It is not an unprimeable number, because it can be changed into a prime (396173) by changing a digit.

396178 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, 651 + ... + 1102.

2³⁹⁶¹⁷⁸ is an apocalyptic number.

396178 is a deficient number, since it is larger than the sum of its proper divisors (203690).

396178 is a wasteful number, since it uses less digits than its factorization.

396178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868.

The product of its digits is 9072, while the sum is 34.

The square root of 396178 is about 629.4267232967. The cubic root of 396178 is about 73.4452057404.

The spelling of 396178 in words is "three hundred ninety-six thousand, one hundred seventy-eight".