Search a number
-
+
285166 = 2720369
BaseRepresentation
bin1000101100111101110
3112111011201
41011213232
533111131
610040114
72265250
oct1054756
9474151
10285166
11185282
1211903a
139ca4b
1475cd0
1559761
hex459ee

285166 has 8 divisors (see below), whose sum is σ = 488880. Its totient is φ = 122208.

The previous prime is 285161. The next prime is 285179. The reversal of 285166 is 661582.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285161) 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 3 ways as a sum of consecutive naturals, for example, 10171 + ... + 10198.

It is an arithmetic number, because the mean of its divisors is an integer number (61110).

2285166 is an apocalyptic number.

285166 is a deficient number, since it is larger than the sum of its proper divisors (203714).

285166 is a wasteful number, since it uses less digits than its factorization.

285166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20378.

The product of its digits is 2880, while the sum is 28.

The square root of 285166 is about 534.0093632138. The cubic root of 285166 is about 65.8212180166.

The spelling of 285166 in words is "two hundred eighty-five thousand, one hundred sixty-six".

Divisors: 1 2 7 14 20369 40738 142583 285166