285212205 has 16 divisors (see below), whose sum is σ = 507044160. Its totient is φ = 152113104.

The previous prime is 285212203. The next prime is 285212209. The reversal of 285212205 is 502212582.

It is not a de Polignac number, because 285212205 - 2¹ = 285212203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285212203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1056207 + ... + 1056476.

It is an arithmetic number, because the mean of its divisors is an integer number (31690260).

Almost surely, 2^285212205 is an apocalyptic number.

It is an amenable number.

285212205 is a deficient number, since it is larger than the sum of its proper divisors (221831955).

285212205 is a wasteful number, since it uses less digits than its factorization.

285212205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112697 (or 2112691 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 285212205 is about 16888.2268163357. The cubic root of 285212205 is about 658.2477279421.

Adding to 285212205 its reverse (502212582), we get a palindrome (787424787).

The spelling of 285212205 in words is "two hundred eighty-five million, two hundred twelve thousand, two hundred five".