189285 has 8 divisors (see below), whose sum is σ = 302880. Its totient is φ = 100944.

The previous prime is 189271. The next prime is 189307. The reversal of 189285 is 582981.

189285 = 141² + 142² + ... + 149².

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189285 - 2⁵ = 189253 is a prime.

It is a super-2 number, since 2×189285² = 71657622450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6295 + ... + 6324.

It is an arithmetic number, because the mean of its divisors is an integer number (37860).

2¹⁸⁹²⁸⁵ is an apocalyptic number.

189285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189285 is a deficient number, since it is larger than the sum of its proper divisors (113595).

189285 is a wasteful number, since it uses less digits than its factorization.

189285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12627.

The product of its digits is 5760, while the sum is 33.

The square root of 189285 is about 435.0689600512. The cubic root of 189285 is about 57.4167667838.

It can be divided in two parts, 189 and 285, that added together give a palindrome (474).

The spelling of 189285 in words is "one hundred eighty-nine thousand, two hundred eighty-five".