285491044 has 12 divisors (see below), whose sum is σ = 504556668. Its totient is φ = 141332000.

The previous prime is 285491027. The next prime is 285491053. The reversal of 285491044 is 440194582.

It can be written as a sum of positive squares in 2 ways, for example, as 252428544 + 33062500 = 15888^2 + 5750^2 .

It is a junction number, because it is equal to n+sod(n) for n = 285490994 and 285491012.

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, 352927 + ... + 353734.

It is an arithmetic number, because the mean of its divisors is an integer number (42046389).

Almost surely, 2^285491044 is an apocalyptic number.

It is an amenable number.

285491044 is a deficient number, since it is larger than the sum of its proper divisors (219065624).

285491044 is a wasteful number, since it uses less digits than its factorization.

285491044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706766 (or 706764 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 285491044 is about 16896.4802251830. The cubic root of 285491044 is about 658.4621710279.

The spelling of 285491044 in words is "two hundred eighty-five million, four hundred ninety-one thousand, forty-four".