285136873 has 8 divisors (see below), whose sum is σ = 332019648. Its totient is φ = 239791344.

The previous prime is 285136871. The next prime is 285136883. The reversal of 285136873 is 378631582.

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

It is a cyclic number.

It is not a de Polignac number, because 285136873 - 2¹ = 285136871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285136871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383911 + ... + 384652.

It is an arithmetic number, because the mean of its divisors is an integer number (41502456).

Almost surely, 2^285136873 is an apocalyptic number.

It is an amenable number.

285136873 is a deficient number, since it is larger than the sum of its proper divisors (46882775).

285136873 is an equidigital number, since it uses as much as digits as its factorization.

285136873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768623.

The product of its digits is 241920, while the sum is 43.

The square root of 285136873 is about 16885.9963579293. The cubic root of 285136873 is about 658.1897693609.

The spelling of 285136873 in words is "two hundred eighty-five million, one hundred thirty-six thousand, eight hundred seventy-three".