394528 has 12 divisors (see below), whose sum is σ = 776790. Its totient is φ = 197248.

The previous prime is 394523. The next prime is 394529. The reversal of 394528 is 825493.

It can be written as a sum of positive squares in only one way, i.e., 394384 + 144 = 628^2 + 12^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 394528.

It is not an unprimeable number, because it can be changed into a prime (394523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6133 + ... + 6196.

2³⁹⁴⁵²⁸ is an apocalyptic number.

It is an amenable number.

394528 is a deficient number, since it is larger than the sum of its proper divisors (382262).

394528 is a wasteful number, since it uses less digits than its factorization.

394528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12339 (or 12331 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 394528 is about 628.1146392180. The cubic root of 394528 is about 73.3431024635.

The spelling of 394528 in words is "three hundred ninety-four thousand, five hundred twenty-eight".