21331921 is an odd 8-digits composite number following 21331920
and preceding 21331922 . In scientific notation, it is written as 2.1331921 × 10^7.
The sum of its digits is 22. It has a total of 3 prime factors and 8 positive divisors.
There are 19558800 positive integers (up to 21331921) that are relatively prime to 21331921.
21331921 has 8 divisors, whose sum is 23127104
The reverse of 21331921 is 12913312
Previous prime number is 151
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty-one million three hundred thirty-one thousand nine hundred twenty-one
Scientific notation
2.1331921 × 10^7
Engineering notation
2.1331921 × 10^6
Prime Factorization
13 × 151 × 10867
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21331921
Product of the distinct prime numbers
The prime factorization of 21331921 is 13 × 151 × 10867.
Since it has a total of 3 prime factors.
2 , 9 , 34 , 13 , 541 , 493 , 9879 , 9442 , 95789 , 50742 , 666927 , 22507 , 1151499 , 3627565 , 62110490 , 42451547 , 271186346 , 111654912 , 9033195073 , 9601658656
n×2
42663842
n×3
63995763
n×4
85327684
n×5
106659605
n÷2
10665960.5
n÷3
7110640.3333333
n÷3
5332980.25
n÷5
4266384.2
n2
455050853550241
n3
9.7071088589163E+21
n4
2.070712793168E+29
n5
4.417228171755E+36
2 √n
4618.6492614183
3 √n
277.33838924744
4 √n
67.960644945574
5 √n
29.228464013934
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21331920
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21331921 can be divided by 8 positive divisors.
The sum of these divisors (counting 21331921) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001010111111111010001
3
Ternary
1111010202220011
4
Quaternary
1101113333101
5
Quinary
20430110141
6
Senary
2041114521
8
Octal
121277721
10
Decimal
21331921
12
Duodecimal
7188a41
16
Hexadecimal
1457fd1
20
Vigesimal
6d69g1
36
Base36
cp7td
md5
4c8d7a14917a2d48f30ad803d44ef4cd
sha1
3014ce390419e0caee6e430d7cae5633cfd865b5
sha256
c56da12d8c0bca68e4733debac095dd041e6149b58bc289c684e9f40bb48256f
sha512
a5893720b1d766f60e9cfd1d34e891567db2620526bb92137be645cfe3ed4ab53d8491aed30fd154f5d475dd6fda0a5f9778c1b177e140030d466b9f2a912491
ripemd-160
f4e3cd20bf085ed64f50201a03508c769ea89cec
Diameter
42663842
Circumference
134032412.60112
Area
1.4295844185232E+15
Volume
4.0661042505024E+22
Surface area
5.7183376740928E+15
Circumference
134032412.60112
Perimeter
85327684
Area
455050853550241
Diagonal
30167891.989671
Surface area
2730305121301446
Volume
9.7071088589163E+21
Space diagonal
36947970.995045
Perimeter
63995763
Area
1.9704279959415E+14
Altitude
18473985.497523
Surface area
1.9704279959415E+14
Volume
1.143993749976E+21
Height
10055963.996557