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20184 = 233292
BaseRepresentation
bin100111011011000
31000200120
410323120
51121214
6233240
7112563
oct47330
930616
1020184
111418a
12b820
139258
1474da
155ea9
hex4ed8

20184 has 24 divisors (see below), whose sum is σ = 52260. Its totient is φ = 6496.

The previous prime is 20183. The next prime is 20201. The reversal of 20184 is 48102.

20184 = T67 + T68 + ... + T74.

20184 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 682 + ... + 710.

220184 is an apocalyptic number.

20184 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26130).

20184 is an abundant number, since it is smaller than the sum of its proper divisors (32076).

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

20184 is a wasteful number, since it uses less digits than its factorization.

20184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 20184 is about 142.0704050814. The cubic root of 20184 is about 27.2271643271.

Adding to 20184 its reverse (48102), we get a palindrome (68286).

The spelling of 20184 in words is "twenty thousand, one hundred eighty-four".

Divisors: 1 2 3 4 6 8 12 24 29 58 87 116 174 232 348 696 841 1682 2523 3364 5046 6728 10092 20184