285243338 has 16 divisors (see below), whose sum is σ = 451942656. Its totient is φ = 134809920.

The previous prime is 285243331. The next prime is 285243377. The reversal of 285243338 is 833342582.

It is not an unprimeable number, because it can be changed into a prime (285243331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50831 + ... + 56162.

It is an arithmetic number, because the mean of its divisors is an integer number (28246416).

Almost surely, 2^285243338 is an apocalyptic number.

285243338 is a deficient number, since it is larger than the sum of its proper divisors (166699318).

285243338 is a wasteful number, since it uses less digits than its factorization.

285243338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107069.

The product of its digits is 138240, while the sum is 38.

The square root of 285243338 is about 16889.1485279750. The cubic root of 285243338 is about 658.2716779233.

The spelling of 285243338 in words is "two hundred eighty-five million, two hundred forty-three thousand, three hundred thirty-eight".