285318346 has 4 divisors (see below), whose sum is σ = 427977522. Its totient is φ = 142659172.

The previous prime is 285318323. The next prime is 285318349. The reversal of 285318346 is 643813582.

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., 193905625 + 91412721 = 13925^2 + 9561^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 285318299 and 285318308.

It is not an unprimeable number, because it can be changed into a prime (285318349) 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 as a sum of consecutive naturals, namely, 71329585 + ... + 71329588.

Almost surely, 2^285318346 is an apocalyptic number.

285318346 is a deficient number, since it is larger than the sum of its proper divisors (142659176).

285318346 is a wasteful number, since it uses less digits than its factorization.

285318346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142659175.

The product of its digits is 138240, while the sum is 40.

The square root of 285318346 is about 16891.3689794522. The cubic root of 285318346 is about 658.3293728901.

The spelling of 285318346 in words is "two hundred eighty-five million, three hundred eighteen thousand, three hundred forty-six".