30285 has 12 divisors (see below), whose sum is σ = 52572. Its totient is φ = 16128.

The previous prime is 30271. The next prime is 30293. The reversal of 30285 is 58203.

It can be written as a sum of positive squares in 2 ways, for example, as 10404 + 19881 = 102^2 + 141^2 .

It is not a de Polignac number, because 30285 - 2⁴ = 30269 is a prime.

It is a super-3 number, since 3×30285³ = 83330500197375, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 292 + ... + 381.

It is an arithmetic number, because the mean of its divisors is an integer number (4381).

2³⁰²⁸⁵ is an apocalyptic number.

It is an amenable number.

30285 is a deficient number, since it is larger than the sum of its proper divisors (22287).

30285 is a wasteful number, since it uses less digits than its factorization.

30285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 30285 is about 174.0258601473. The cubic root of 30285 is about 31.1704108033.

Adding to 30285 its sum of digits (18), we get a palindrome (30303).

Adding to 30285 its reverse (58203), we get a palindrome (88488).

The spelling of 30285 in words is "thirty thousand, two hundred eighty-five".