21372871 is an odd 8-digits composite number following 21372870
and preceding 21372872 . In scientific notation, it is written as 2.1372871 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 19728792 positive integers (up to 21372871) that are relatively prime to 21372871.
21372871 has 4 divisors, whose sum is 23016952
The reverse of 21372871 is 17827312
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million three hundred seventy-two thousand eight hundred seventy-one
Scientific notation
2.1372871 × 10^7
Engineering notation
2.1372871 × 10^6
Prime Factorization
13 × 1644067
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21372871
Product of the distinct prime numbers
The prime factorization of 21372871 is 13 × 1644067.
Since it has a total of 2 prime factors.
10 , 1 , 70 , 90 , 190 , 550 , 1405 , 4423 , 90490 , 876 , 991822 , 179858 , 5499264 , 7446961 , 29573829 , 89741727 , 397070893 , 171357915 , 9241785993 , 9807837043
n×2
42745742
n×3
64118613
n×4
85491484
n×5
106864355
n÷2
10686435.5
n÷3
7124290.3333333
n÷3
5343217.75
n÷5
4274574.2
n2
456799614782641
n3
9.7631192395991E+21
n4
2.0866588806557E+29
n5
4.4597891077258E+36
2 √n
4623.0802502228
3 √n
277.51574079474
4 √n
67.993236797661
5 √n
29.239677140015
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
-21372870
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 21372871 can be divided by 4 positive divisors.
The sum of these divisors (counting 21372871) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001100001111111000111
3
Ternary
1111012212001211
4
Quaternary
1101201333013
5
Quinary
20432412441
6
Senary
2042032251
8
Octal
121417707
10
Decimal
21372871
12
Duodecimal
71a8687
16
Hexadecimal
1461fc7
20
Vigesimal
6dbc3b
36
Base36
cq3ev
md5
ee3c4aa2f97e61f44f4b8d0f5abd8912
sha1
5a25a2c9aec1e2a69f99f0a18105eb1adc3682ce
sha256
6fed30a612be803170df6109fba559a2f8cd931479ef77bda7e6c1be2d21d673
sha512
79d3c13f5a1bcbf1f6a4bb7372e6933b7070c5a0ae9a857daf0cd7ca010c3f619fde518f8c80743963d9b37ddb2103bb807117c77d5e3e8f09b332316fc0d59c
ripemd-160
0903f2684a677cf5f63d3d8cf325fc90715e5a26
Diameter
42745742
Circumference
134289709.03944
Area
1.4350783139638E+15
Volume
4.0895658238994E+22
Surface area
5.7403132558552E+15
Circumference
134289709.03944
Perimeter
85491484
Area
456799614782641
Diagonal
30225804.035051
Surface area
2740797688695846
Volume
9.7631192395991E+21
Space diagonal
37018898.475615
Perimeter
64118613
Area
1.9780003542036E+14
Altitude
18509449.237808
Surface area
1.9780003542036E+14
Volume
1.1505946366422E+21
Height
10075268.011684