285281072 has 10 divisors (see below), whose sum is σ = 552732108. Its totient is φ = 142640528.

The previous prime is 285281041. The next prime is 285281083. The reversal of 285281072 is 270182582.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8915018 + ... + 8915049.

Almost surely, 2^285281072 is an apocalyptic number.

It is an amenable number.

285281072 is a deficient number, since it is larger than the sum of its proper divisors (267451036).

285281072 is a wasteful number, since it uses less digits than its factorization.

285281072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17830075 (or 17830069 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 285281072 is about 16890.2655988590. The cubic root of 285281072 is about 658.3007035831.

The spelling of 285281072 in words is "two hundred eighty-five million, two hundred eighty-one thousand, seventy-two".