378506 has 4 divisors (see below), whose sum is σ = 567762. Its totient is φ = 189252.

The previous prime is 378503. The next prime is 378509. The reversal of 378506 is 605873.

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

It is an interprime number because it is at equal distance from previous prime (378503) and next prime (378509).

It can be written as a sum of positive squares in only one way, i.e., 225625 + 152881 = 475^2 + 391^2 .

It is not an unprimeable number, because it can be changed into a prime (378503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94625 + ... + 94628.

2³⁷⁸⁵⁰⁶ is an apocalyptic number.

378506 is a deficient number, since it is larger than the sum of its proper divisors (189256).

378506 is a wasteful number, since it uses less digits than its factorization.

378506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189255.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 378506 is about 615.2284128679. The cubic root of 378506 is about 72.3365162910.

The spelling of 378506 in words is "three hundred seventy-eight thousand, five hundred six".