285456560 has 20 divisors (see below), whose sum is σ = 663686688. Its totient is φ = 114182592.

The previous prime is 285456557. The next prime is 285456583. The reversal of 285456560 is 65654582.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1784024 + ... + 1784183.

Almost surely, 2^285456560 is an apocalyptic number.

285456560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285456560 is an abundant number, since it is smaller than the sum of its proper divisors (378230128).

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

285456560 is a wasteful number, since it uses less digits than its factorization.

285456560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568220 (or 3568214 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The square root of 285456560 is about 16895.4597451505. The cubic root of 285456560 is about 658.4356584347.

The spelling of 285456560 in words is "two hundred eighty-five million, four hundred fifty-six thousand, five hundred sixty".