285000273 has 6 divisors (see below), whose sum is σ = 411667074. Its totient is φ = 190000176.

The previous prime is 285000253. The next prime is 285000277. The reversal of 285000273 is 372000582.

It can be written as a sum of positive squares in only one way, i.e., 204861969 + 80138304 = 14313^2 + 8952^2 .

It is not a de Polignac number, because 285000273 - 2¹⁶ = 284934737 is a prime.

It is a super-2 number, since 2×285000273² = 162450311220149058, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (285000277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15833340 + ... + 15833357.

It is an arithmetic number, because the mean of its divisors is an integer number (68611179).

Almost surely, 2^285000273 is an apocalyptic number.

It is an amenable number.

285000273 is a deficient number, since it is larger than the sum of its proper divisors (126666801).

285000273 is a wasteful number, since it uses less digits than its factorization.

285000273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31666703 (or 31666700 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 285000273 is about 16881.9511016944. The cubic root of 285000273 is about 658.0846466493.

The spelling of 285000273 in words is "two hundred eighty-five million, two hundred seventy-three", and thus it is an aban number.