285280260 has 48 divisors (see below), whose sum is σ = 799536192. Its totient is φ = 76003200.

The previous prime is 285280253. The next prime is 285280283. The reversal of 285280260 is 62082582.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103095 + ... + 105825.

It is an arithmetic number, because the mean of its divisors is an integer number (16657004).

Almost surely, 2^285280260 is an apocalyptic number.

285280260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285280260 is an abundant number, since it is smaller than the sum of its proper divisors (514255932).

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

285280260 is a wasteful number, since it uses less digits than its factorization.

285280260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484 (or 4482 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 285280260 is about 16890.2415613277. The cubic root of 285280260 is about 658.3000790053.

The spelling of 285280260 in words is "two hundred eighty-five million, two hundred eighty thousand, two hundred sixty".