285317340 has 96 divisors (see below), whose sum is σ = 996033024. Its totient is φ = 59285760.

The previous prime is 285317327. The next prime is 285317371. The reversal of 285317340 is 43713582.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 26259 + ... + 35498.

It is an arithmetic number, because the mean of its divisors is an integer number (10375344).

Almost surely, 2^285317340 is an apocalyptic number.

285317340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285317340 is an abundant number, since it is smaller than the sum of its proper divisors (710715684).

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

285317340 is a wasteful number, since it uses less digits than its factorization.

285317340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61787 (or 61785 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 285317340 is about 16891.3392009041. The cubic root of 285317340 is about 658.3285991577.

The spelling of 285317340 in words is "two hundred eighty-five million, three hundred seventeen thousand, three hundred forty".