21091357 is an odd 8-digits composite number following 21091356
and preceding 21091358 . In scientific notation, it is written as 2.1091357 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 18078300 positive integers (up to 21091357) that are relatively prime to 21091357.
21091357 has 4 divisors, whose sum is 24104416
The reverse of 21091357 is 75319012
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million ninety-one thousand three hundred fifty-seven
Scientific notation
2.1091357 × 10^7
Engineering notation
2.1091357 × 10^6
Prime Factorization
7 × 3013051
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21091357
Product of the distinct prime numbers
The prime factorization of 21091357 is 7 × 3013051.
Since it has a total of 2 prime factors.
8 , 3 , 58 , 28 , 473 , 488 , 5668 , 8198 , 1957 , 65775 , 250548 , 252994 , 9750396 , 5510377 , 70030225 , 73654295 , 322513299 , 888699521 , 7010574625 , 3873299347
n×2
42182714
n×3
63274071
n×4
84365428
n×5
105456785
n÷2
10545678.5
n÷3
7030452.3333333
n÷3
5272839.25
n÷5
4218271.4
n2
444845340101449
n3
9.3823918778661E+21
n4
1.9788737660997E+29
n5
4.1737133058744E+36
2 √n
4592.532743487
3 √n
276.29191354378
4 √n
67.768228127102
5 √n
29.16224166186
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
-21091356
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 21091357 can be divided by 4 positive divisors.
The sum of these divisors (counting 21091357) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000011101010000011101
3
Ternary
1110200112220101
4
Quaternary
1100131100131
5
Quinary
20344410412
6
Senary
2032021101
8
Octal
120352035
10
Decimal
21091357
12
Duodecimal
7091791
16
Hexadecimal
141d41d
20
Vigesimal
6bg87h
36
Base36
ck271
md5
3e680db3821017f633337990da63bfbc
sha1
e38c098851752727e0cc624f045231baec2258d9
sha256
2bdb45f22069fa884a07d0501abed689e1d4618ea8d01e710849442efb1fecbb
sha512
69e3b1e33e8535c261b64588a989d8e08e817197ca4eba467f7a751a82699b34d9d8562f872ad5fb6a26481a7629595aeb1bb79fe73330395cbbbdb6afd274b9
ripemd-160
47c9d3f1ca56c5314a2c7284a97cf27574734a2f
Diameter
42182714
Circumference
132520904.41088
Area
1.3975228524464E+15
Volume
3.9300871195473E+22
Surface area
5.5900914097855E+15
Circumference
132520904.41088
Perimeter
84365428
Area
444845340101449
Diagonal
29827683.118253
Surface area
2669072040608694
Volume
9.3823918778661E+21
Space diagonal
36531301.924573
Perimeter
63274071
Area
1.9262368264149E+14
Altitude
18265650.962287
Surface area
1.9262368264149E+14
Volume
1.1057254867648E+21
Height
9942561.0394176