21929 is an odd 5-digits prime number following 21928
and preceding 21930 . In scientific notation, it is written as 2.1929 × 10^4.
The sum of its digits is 23. It has a total of 1 prime factors and 2 positive divisors.
There are 21928 positive integers (up to 21929) that are relatively prime to 21929.
21929 has 2 divisors, whose sum is 21930
The reverse of 21929 is 92912
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 5
Sum of Digits 23
Digital Root 5
Name
twenty-one thousand nine hundred twenty-nine
Scientific notation
2.1929 × 10^4
Engineering notation
2.1929 × 10^3
Prime Factorization
21929
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21929
Product of the distinct prime numbers
The prime factorization of 21929 is 21929.
Since it has a total of 1 prime factors.
7 , 9 , 7 , 80 , 169 , 953 , 6263 , 7259 , 71210 , 25451 , 770403 , 819814 , 3093270 , 1833559 , 49394903 , 10487181 , 845370644 , 918803889 , 3203936452 , 3317695104
n×2
43858
n×3
65787
n×4
87716
n×5
109645
n÷2
10964.5
n÷3
7309.6666666667
n÷3
5482.25
n÷5
4385.8
n2
480881041
n3
10545240348089
n4
231246575593243681
n5
5.0710061561842E+21
2 √n
148.08443537388
3 √n
27.990217671192
4 √n
12.168994838271
5 √n
7.3825052675003
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21930
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10965
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
148.08781178747
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999088007296
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21929 can be divided by 2 positive divisors.
The sum of these divisors (counting 21929) is 21930, the average is 10965.
Base
System
Value
2
Binary
101010110101001
3
Ternary
1010002012
4
Quaternary
11112221
5
Quinary
1200204
6
Senary
245305
8
Octal
52651
10
Decimal
21929
12
Duodecimal
10835
16
Hexadecimal
55a9
20
Vigesimal
2eg9
36
Base36
gx5
md5
00e9de08dddfe2521abb83e8fbc041c4
sha1
a1ba46fe3d4109efc50cc4e276330ad05d16209d
sha256
b23075713f8ae1d3cd5e00619800b1cf60a995d03f883d3d9ed2afaabce55872
sha512
0c9f17ad23c941c7d82c3912ea9c34b3bde7c4bff1e332f84372bb9615c37b37990988434812078b429ad0f7bef2ebe7b074487f61d901ef69a43541ee2861d7
ripemd-160
8991f9e31a0f297d64d76b9e0f29d38e8769830f
Diameter
43858
Circumference
137783.97060114
Area
1510732345.6562
Volume
44171799477193
Surface area
6042929382.6248
Circumference
137783.97060114
Perimeter
87716
Area
480881041
Diagonal
31012.28920928
Surface area
2885286246
Volume
10545240348089
Space diagonal
37982.142159178
Perimeter
65787
Area
208227598.85215
Altitude
18991.071079589
Surface area
208227598.85215
Volume
1242768493229.3
Height
10337.429736427