285327987 has 8 divisors (see below), whose sum is σ = 434785536. Its totient is φ = 163044552.

The previous prime is 285327971. The next prime is 285327989. The reversal of 285327987 is 789723582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 285327987 - 2⁴ = 285327971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285327989) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6793503 + ... + 6793544.

It is an arithmetic number, because the mean of its divisors is an integer number (54348192).

Almost surely, 2^285327987 is an apocalyptic number.

285327987 is a deficient number, since it is larger than the sum of its proper divisors (149457549).

285327987 is a wasteful number, since it uses less digits than its factorization.

285327987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13587057.

The product of its digits is 1693440, while the sum is 51.

The square root of 285327987 is about 16891.6543594759. The cubic root of 285327987 is about 658.3367878613.

The spelling of 285327987 in words is "two hundred eighty-five million, three hundred twenty-seven thousand, nine hundred eighty-seven".