Search a number
-
+
286161 = 31731181
BaseRepresentation
bin1000101110111010001
3112112112120
41011313101
533124121
610044453
72301201
oct1056721
9475476
10286161
11185aa7
12119729
13a0335
1476401
1559bc6
hex45dd1

286161 has 16 divisors (see below), whose sum is σ = 419328. Its totient is φ = 172800.

The previous prime is 286129. The next prime is 286163. The reversal of 286161 is 161682.

286161 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 286161 - 25 = 286129 is a prime.

It is a Curzon number.

286161 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 286161.

It is not an unprimeable number, because it can be changed into a prime (286163) 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, 1491 + ... + 1671.

It is an arithmetic number, because the mean of its divisors is an integer number (26208).

2286161 is an apocalyptic number.

It is an amenable number.

286161 is a deficient number, since it is larger than the sum of its proper divisors (133167).

286161 is a wasteful number, since it uses less digits than its factorization.

286161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232.

The product of its digits is 576, while the sum is 24.

The square root of 286161 is about 534.9401835720. The cubic root of 286161 is about 65.8976835228.

The spelling of 286161 in words is "two hundred eighty-six thousand, one hundred sixty-one".

Divisors: 1 3 17 31 51 93 181 527 543 1581 3077 5611 9231 16833 95387 286161