285317489272 has 16 divisors (see below), whose sum is σ = 534976219800. Its totient is φ = 142657164000.

The previous prime is 285317489269. The next prime is 285317489299. The reversal of 285317489272 is 272984713582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988179 + ... + 1243837.

Almost surely, 2^285317489272 is an apocalyptic number.

It is an amenable number.

285317489272 is a deficient number, since it is larger than the sum of its proper divisors (249658730528).

285317489272 is a wasteful number, since it uses less digits than its factorization.

285317489272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395166 (or 395162 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 58.

The spelling of 285317489272 in words is "two hundred eighty-five billion, three hundred seventeen million, four hundred eighty-nine thousand, two hundred seventy-two".