21998971 is an odd 8-digits composite number following 21998970
and preceding 21998972 . In scientific notation, it is written as 2.1998971 × 10^7.
The sum of its digits is 46. It has a total of 2 prime factors and 4 positive divisors.
There are 21042472 positive integers (up to 21998971) that are relatively prime to 21998971.
21998971 has 4 divisors, whose sum is 22955472
The reverse of 21998971 is 17989912
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1
Name
twenty-one million nine hundred ninety-eight thousand nine hundred seventy-one
Scientific notation
2.1998971 × 10^7
Engineering notation
2.1998971 × 10^6
Prime Factorization
23 × 956477
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21998971
Product of the distinct prime numbers
The prime factorization of 21998971 is 23 × 956477.
Since it has a total of 2 prime factors.
10 , 8 , 51 , 59 , 422 , 595 , 2948 , 3609 , 90572 , 72092 , 635752 , 615753 , 9372623 , 2887989 , 68040131 , 9773325 , 810048612 , 692172245 , 4073727173 , 6676889040
n×2
43997942
n×3
65996913
n×4
87995884
n×5
109994855
n÷2
10999485.5
n÷3
7332990.3333333
n÷3
5499742.75
n÷5
4399794.2
n2
483954725058841
n3
1.0646505961882E+22
n4
2.3421217590678E+29
n5
5.1524268656201E+36
2 √n
4690.3060667722
3 √n
280.19956436338
4 √n
68.485809236456
5 √n
29.409014632528
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
-21998970
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 21998971 can be divided by 4 positive divisors.
The sum of these divisors (counting 21998971) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010011111010110101111011
3
Ternary
1112101122220201
4
Quaternary
1103322311323
5
Quinary
21112431341
6
Senary
2103303031
8
Octal
123726573
10
Decimal
21998971
12
Duodecimal
744aa77
16
Hexadecimal
14fad7b
20
Vigesimal
6h9h8b
36
Base36
d3iij
md5
9b18a171c6d0560e851a8112c7edd464
sha1
a1e7439eeef95a64b760d29311325d7f8bf8d23b
sha256
2dbde531bae1787824ba205294fc09ba7561a7892caf5e1aa04fa59a7f838881
sha512
84ffa31445742993c5f078136c774e51428ae61058226df4a2763a554d27026d189b1ff74f006b40e8155e77e5904662df264ad2dfa3c0645c6084cbb133da95
ripemd-160
e3d931e2899c12528aaf7b2ab3a2c088e6e78a58
Diameter
43997942
Circumference
138223611.36027
Area
1.5203886089149E+15
Volume
4.4595979888333E+22
Surface area
6.0815544356597E+15
Circumference
138223611.36027
Perimeter
87995884
Area
483954725058841
Diagonal
31111243.146452
Surface area
2903728350353046
Volume
1.0646505961882E+22
Space diagonal
38103335.486234
Perimeter
65996913
Area
2.0955854309123E+14
Altitude
19051667.743117
Surface area
2.0955854309123E+14
Volume
1.254702760265E+21
Height
10370414.382151