21697 is an odd 5-digits composite number following 21696
and preceding 21698 . In scientific notation, it is written as 2.1697 × 10^4.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 20016 positive integers (up to 21697) that are relatively prime to 21697.
21697 has 4 divisors, whose sum is 23380
The reverse of 21697 is 79612
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 5
Sum of Digits 25
Digital Root 7
Name
twenty-one thousand six hundred ninety-seven
Scientific notation
2.1697 × 10^4
Engineering notation
2.1697 × 10^3
Prime Factorization
13 × 1669
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21697
Product of the distinct prime numbers
The prime factorization of 21697 is 13 × 1669.
Since it has a total of 2 prime factors.
7 , 4 , 3 , 50 , 72 , 841 , 1360 , 1744 , 37539 , 8946 , 607945 , 863441 , 7149795 , 1943650 , 68462422 , 53536276 , 957145988 , 416968901 , 8778060504 , 2441545245
n×2
43394
n×3
65091
n×4
86788
n×5
108485
n÷2
10848.5
n÷3
7232.3333333333
n÷3
5424.25
n÷5
4339.4
n2
470759809
n3
10214075575873
n4
221614797769716481
n5
4.8083762672095E+21
2 √n
147.2990156111
3 √n
27.891159097206
4 √n
12.136680584538
5 √n
7.3668179528056
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21696
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21697 can be divided by 4 positive divisors.
The sum of these divisors (counting 21697) is 1, the average is 0.25.
Base
System
Value
2
Binary
101010011000001
3
Ternary
1002202121
4
Quaternary
11103001
5
Quinary
1143242
6
Senary
244241
8
Octal
52301
10
Decimal
21697
12
Duodecimal
10681
16
Hexadecimal
54c1
20
Vigesimal
2e4h
36
Base36
gqp
md5
fdd210228f5fd6df874a03b6df28fc9a
sha1
11db4c4cfc0ddc77abd7f897006894c0a4d79357
sha256
030069d5dbe8a0c53757d2b04341eb1f45cf333e105cac85958b466ac1ce3feb
sha512
25ef0fd23ee2d2d3808c5ee16899ca422f1ea771228b75afda75bc79721d4fac1e757aba8b8bb8e8a0af075630cb6db4a0c31188801e79ee70eddfbcc49ebeb3
ripemd-160
48844ce2953409237264f7a939de991ed8424959
Diameter
43394
Circumference
136326.27160988
Area
1478935557.5597
Volume
42784619723165
Surface area
5915742230.2389
Circumference
136326.27160988
Perimeter
86788
Area
470759809
Diagonal
30684.191662809
Surface area
2824558854
Volume
10214075575873
Space diagonal
37580.306371822
Perimeter
65091
Area
203844976.83736
Altitude
18790.153185911
Surface area
203844976.83736
Volume
1203740350541.9
Height
10228.063887603