Search a number
-
+
180006 = 23191579
BaseRepresentation
bin101011111100100110
3100010220220
4223330212
521230011
63505210
71346541
oct537446
9303826
10180006
11113272
1288206
1363c18
1449858
1538506
hex2bf26

180006 has 16 divisors (see below), whose sum is σ = 379200. Its totient is φ = 56808.

The previous prime is 180001. The next prime is 180007. The reversal of 180006 is 600081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180001) 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 7 ways as a sum of consecutive naturals, for example, 676 + ... + 903.

It is an arithmetic number, because the mean of its divisors is an integer number (23700).

2180006 is an apocalyptic number.

180006 is an abundant number, since it is smaller than the sum of its proper divisors (199194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180006 is a wasteful number, since it uses less digits than its factorization.

180006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 180006 is about 424.2711397208. The cubic root of 180006 is about 56.4627890832.

Adding to 180006 its reverse (600081), we get a palindrome (780087).

The spelling of 180006 in words is "one hundred eighty thousand, six".

Divisors: 1 2 3 6 19 38 57 114 1579 3158 4737 9474 30001 60002 90003 180006