21497871 is an odd 8-digits composite number following 21497870
and preceding 21497872 . In scientific notation, it is written as 2.1497871 × 10^7.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 14320152 positive integers (up to 21497871) that are relatively prime to 21497871.
21497871 has 8 divisors, whose sum is 28687360
The reverse of 21497871 is 17879412
Previous prime number is 1723
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty-one million four hundred ninety-seven thousand eight hundred seventy-one
Scientific notation
2.1497871 × 10^7
Engineering notation
2.1497871 × 10^6
Prime Factorization
3 × 1723 × 4159
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21497871
Product of the distinct prime numbers
The prime factorization of 21497871 is 3 × 1723 × 4159.
Since it has a total of 3 prime factors.
5 , 4 , 99 , 33 , 181 , 265 , 8747 , 7817 , 10297 , 52731 , 878818 , 596857 , 7852152 , 8431189 , 71233109 , 85361672 , 624022890 , 851743813 , 8711764781 , 4357972848
n×2
42995742
n×3
64493613
n×4
85991484
n×5
107489355
n÷2
10748935.5
n÷3
7165957
n÷3
5374467.75
n÷5
4299574.2
n2
462158457532641
n3
9.9354229015957E+21
n4
2.1359043986895E+29
n5
4.5917397231359E+36
2 √n
4636.5796660901
3 √n
278.05570972623
4 √n
68.092434719946
5 √n
29.273799266705
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
-21497870
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 21497871 can be divided by 8 positive divisors.
The sum of these divisors (counting 21497871) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010000000100000001111
3
Ternary
1111110012112110
4
Quaternary
1102000200033
5
Quinary
21000412441
6
Senary
2044435103
8
Octal
122004017
10
Decimal
21497871
12
Duodecimal
7248a93
16
Hexadecimal
148080f
20
Vigesimal
6e74db
36
Base36
csrv3
md5
39a548db4bfbd10ef1299df0baa4d122
sha1
ffccd9776cc99b6053b0c4aa9bb69c350307693c
sha256
a752ba8f3d8cbbd6e369983668abb9c092f1590197276389a6f8d032ea1bf872
sha512
4eff7d2b0a5d0f2fab629b29e234278e163e58206230bfa9c1b7503f79fcb13a415bbfc7f013d11190bc23ecb7e5a2ad7bfd3d98d1ee8acf5f6d169996882c17
ripemd-160
ee3d0dd3dd0590294c12c3d61ee9baa6dbb18203
Diameter
42995742
Circumference
135075107.20284
Area
1.4519136149789E+15
Volume
4.1617402130614E+22
Surface area
5.8076544599157E+15
Circumference
135075107.20284
Perimeter
85991484
Area
462158457532641
Diagonal
30402580.730347
Surface area
2772950745195846
Volume
9.9354229015957E+21
Space diagonal
37235404.826562
Perimeter
64493613
Area
2.0012048239855E+14
Altitude
18617702.413281
Surface area
2.0012048239855E+14
Volume
1.1709008179457E+21
Height
10134193.576782