285845456 has 20 divisors (see below), whose sum is σ = 596427972. Its totient is φ = 131928576.

The previous prime is 285845447. The next prime is 285845459. The reversal of 285845456 is 654548582.

It can be written as a sum of positive squares in 2 ways, for example, as 156250000 + 129595456 = 12500^2 + 11384^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 285845456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285845459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686921 + ... + 687336.

Almost surely, 2^285845456 is an apocalyptic number.

285845456 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

285845456 is an abundant number, since it is smaller than the sum of its proper divisors (310582516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285845456 is a wasteful number, since it uses less digits than its factorization.

285845456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374278 (or 1374272 counting only the distinct ones).

The product of its digits is 1536000, while the sum is 47.

The square root of 285845456 is about 16906.9647187187. The cubic root of 285845456 is about 658.7345326288.

The spelling of 285845456 in words is "two hundred eighty-five million, eight hundred forty-five thousand, four hundred fifty-six".