285281396 has 12 divisors (see below), whose sum is σ = 512735748. Its totient is φ = 138785472.

The previous prime is 285281317. The next prime is 285281419. The reversal of 285281396 is 693182582.

It can be written as a sum of positive squares in 2 ways, for example, as 251222500 + 34058896 = 15850^2 + 5836^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963641 + ... + 963936.

It is an arithmetic number, because the mean of its divisors is an integer number (42727979).

Almost surely, 2^285281396 is an apocalyptic number.

It is an amenable number.

285281396 is a deficient number, since it is larger than the sum of its proper divisors (227454352).

285281396 is a wasteful number, since it uses less digits than its factorization.

285281396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927618 (or 1927616 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 285281396 is about 16890.2751901797. The cubic root of 285281396 is about 658.3009527986.

It can be divided in two parts, 2852 and 81396, that added together give a palindrome (84248).

The spelling of 285281396 in words is "two hundred eighty-five million, two hundred eighty-one thousand, three hundred ninety-six".