21154471 is an odd 8-digits composite number following 21154470
and preceding 21154472 . In scientific notation, it is written as 2.1154471 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 19527192 positive integers (up to 21154471) that are relatively prime to 21154471.
21154471 has 4 divisors, whose sum is 22781752
The reverse of 21154471 is 17445112
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million one hundred fifty-four thousand four hundred seventy-one
Scientific notation
2.1154471 × 10^7
Engineering notation
2.1154471 × 10^6
Prime Factorization
13 × 1627267
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21154471
Product of the distinct prime numbers
The prime factorization of 21154471 is 13 × 1627267.
Since it has a total of 2 prime factors.
8 , 4 , 90 , 100 , 977 , 474 , 8213 , 6943 , 84060 , 84858 , 128920 , 995904 , 8462340 , 875713 , 3050195 , 6097516 , 793286989 , 239274619 , 1085219593 , 9596333396
n×2
42308942
n×3
63463413
n×4
84617884
n×5
105772355
n÷2
10577235.5
n÷3
7051490.3333333
n÷3
5288617.75
n÷5
4230894.2
n2
447511643289841
n3
9.4668720801373E+21
n4
2.0026667087997E+29
n5
4.236535481397E+36
2 √n
4599.3989824759
3 √n
276.56723205326
4 √n
67.818868926545
5 √n
29.17967388872
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
-21154470
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 21154471 can be divided by 4 positive divisors.
The sum of these divisors (counting 21154471) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000101100101010100111
3
Ternary
1110210202110221
4
Quaternary
1100230222213
5
Quinary
20403420341
6
Senary
2033225211
8
Octal
120545247
10
Decimal
21154471
12
Duodecimal
7102207
16
Hexadecimal
142caa7
20
Vigesimal
6c463b
36
Base36
clew7
md5
a55bd2a786340caebe028958f8c33aff
sha1
c9c22f8c04f2c2bc4344b5308f840a63ff3c4215
sha256
bc4322d4d2aa5b685cc9f5a7da9f292d1205cbd0589b6024c453362760eae8d9
sha512
77c19980a54ffef2179452b76e29ea3695542cbcd3e76c19d49e768d4aa1b43159fd364516c8f0bb239fb71fb0c9a40bfa1c66264b450846dda49b3cff8d97ec
ripemd-160
22000ec000eeb6aaa8d32097d817ab3103d7bdbb
Diameter
42308942
Circumference
132917461.36836
Area
1.4058992909553E+15
Volume
3.9654741039245E+22
Surface area
5.623597163821E+15
Circumference
132917461.36836
Perimeter
84617884
Area
447511643289841
Diagonal
29916939.793028
Surface area
2685069859739046
Volume
9.4668720801373E+21
Space diagonal
36640618.579242
Perimeter
63463413
Area
1.9377822578916E+14
Altitude
18320309.289621
Surface area
1.9377822578916E+14
Volume
1.1156815740818E+21
Height
9972313.2643428