285248111 has 16 divisors (see below), whose sum is σ = 301438368. Its totient is φ = 269606400.

The previous prime is 285248087. The next prime is 285248137. The reversal of 285248111 is 111842582.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285248111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285248141) 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 15 ways as a sum of consecutive naturals, for example, 240941 + ... + 242121.

It is an arithmetic number, because the mean of its divisors is an integer number (18839898).

Almost surely, 2^285248111 is an apocalyptic number.

285248111 is a deficient number, since it is larger than the sum of its proper divisors (16190257).

285248111 is a wasteful number, since it uses less digits than its factorization.

285248111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402.

The product of its digits is 5120, while the sum is 32.

The square root of 285248111 is about 16889.2898311326. The cubic root of 285248111 is about 658.2753495407.

The spelling of 285248111 in words is "two hundred eighty-five million, two hundred forty-eight thousand, one hundred eleven".