21754987 is an odd 8-digits composite number following 21754986
and preceding 21754988 . In scientific notation, it is written as 2.1754987 × 10^7.
The sum of its digits is 43. It has a total of 3 prime factors and 8 positive divisors.
There are 20762280 positive integers (up to 21754987) that are relatively prime to 21754987.
21754987 has 8 divisors, whose sum is 22752000
The reverse of 21754987 is 78945712
Previous prime number is 631
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7
Name
twenty-one million seven hundred fifty-four thousand nine hundred eighty-seven
Scientific notation
2.1754987 × 10^7
Engineering notation
2.1754987 × 10^6
Prime Factorization
23 × 631 × 1499
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21754987
Product of the distinct prime numbers
The prime factorization of 21754987 is 23 × 631 × 1499.
Since it has a total of 3 prime factors.
2 , 8 , 37 , 19 , 886 , 670 , 3430 , 7608 , 43415 , 88321 , 378923 , 496898 , 3012694 , 8911239 , 46835454 , 74463540 , 960313990 , 111158858 , 4296212082 , 6262135297
n×2
43509974
n×3
65264961
n×4
87019948
n×5
108774935
n÷2
10877493.5
n÷3
7251662.3333333
n÷3
5438746.75
n÷5
4350997.4
n2
473279459370169
n3
1.0296188485965E+22
n4
2.2399344666172E+29
n5
4.8729745202109E+36
2 √n
4664.2241584212
3 √n
279.15984126279
4 √n
68.295125436748
5 √n
29.343489983427
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
-21754986
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 21754987 can be divided by 8 positive divisors.
The sum of these divisors (counting 21754987) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010111111010001101011
3
Ternary
1111221021020021
4
Quaternary
1102333101223
5
Quinary
21032124422
6
Senary
2054141311
8
Octal
122772153
10
Decimal
21754987
12
Duodecimal
7351837
16
Hexadecimal
14bf46b
20
Vigesimal
6fj797
36
Base36
cya97
md5
e7903c508b27ab32ccc778e7578fcc5e
sha1
b4f3c7eb808345223268b5765ee6ef8fae5e0fcb
sha256
deb531b07c15c25abd558cbe84e14b209c6ebb41baf46208bafcc06efbe3fe2e
sha512
76e450801be934d14ace67d2c26dc52ad696a68f5038cca85f4af3c50d84c6011121713a20efbf51fa64662e1340a4087db9f15337c284c92ade67004e2350d2
ripemd-160
30b5f6bbbf487ae4e6b5387ba4207dbcfe9cfa66
Diameter
43509974
Circumference
136690614.67628
Area
1.4868512726523E+15
Volume
4.3128573476645E+22
Surface area
5.9474050906091E+15
Circumference
136690614.67628
Perimeter
87019948
Area
473279459370169
Diagonal
30766197.66465
Surface area
2839676756221014
Volume
1.0296188485965E+22
Space diagonal
37680742.802
Perimeter
65264961
Area
2.0493601745197E+14
Altitude
18840371.401
Surface area
2.0493601745197E+14
Volume
1.2134174498001E+21
Height
10255399.22155