20921651 is an odd 8-digits composite number following 20921650
and preceding 20921652 . In scientific notation, it is written as 2.0921651 × 10^7.
The sum of its digits is 26. It has a total of 2 prime factors and 4 positive divisors.
There are 20011992 positive integers (up to 20921651) that are relatively prime to 20921651.
20921651 has 4 divisors, whose sum is 21831312
The reverse of 20921651 is 15612902
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8
Name
twenty million nine hundred twenty-one thousand six hundred fifty-one
Scientific notation
2.0921651 × 10^7
Engineering notation
2.0921651 × 10^6
Prime Factorization
23 × 909637
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20921651
Product of the distinct prime numbers
The prime factorization of 20921651 is 23 × 909637.
Since it has a total of 2 prime factors.
4 , 4 , 81 , 93 , 5 , 130 , 6483 , 9938 , 8275 , 99841 , 201494 , 492895 , 4555292 , 1767938 , 41567084 , 95480329 , 701838508 , 197845495 , 5406613489 , 4949149917
n×2
41843302
n×3
62764953
n×4
83686604
n×5
104608255
n÷2
10460825.5
n÷3
6973883.6666667
n÷3
5230412.75
n÷5
4184330.2
n2
437715480565801
n3
9.157730521695E+21
n4
1.9159484192695E+29
n5
4.0084804161958E+36
2 √n
4574.0191298244
3 √n
275.54888060367
4 √n
67.631495102685
5 √n
29.115160641266
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
-20921650
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 20921651 can be divided by 4 positive divisors.
The sum of these divisors (counting 20921651) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111110011110100110011
3
Ternary
1110100221002222
4
Quaternary
1033303310303
5
Quinary
20323443101
6
Senary
2024231255
8
Octal
117636463
10
Decimal
20921651
12
Duodecimal
700b52b
16
Hexadecimal
13f3d33
20
Vigesimal
6af42b
36
Base36
cgf8z
md5
7a8f39856dc71cea900bbfdd4ead0c04
sha1
bd0d338c0effda45cd7278bf878b7a1b8f521bfc
sha256
dafc243acfbdeb2c78a7f5830f1ffe00eed58cac162288d66a8c435f0353b368
sha512
d0590c27a380e3f643d97ba35580255665d618080dc1d6243b05d53c1121db3efd1e291e717e73c4d8ec1008905fbb1bb9ec41f04cc2a1f0a975d0b364fdaa04
ripemd-160
4be6f93ba94edb70334f23687078e2b469ad7d74
Diameter
41843302
Circumference
131454610.16514
Area
1.375123738108E+15
Volume
3.8359811907349E+22
Surface area
5.5004949524322E+15
Circumference
131454610.16514
Perimeter
83686604
Area
437715480565801
Diagonal
29587682.591437
Surface area
2626292883394806
Volume
9.157730521695E+21
Space diagonal
36237362.510224
Perimeter
62764953
Area
1.8953636289985E+14
Altitude
18118681.255112
Surface area
1.8953636289985E+14
Volume
1.0792488920283E+21
Height
9862560.8638122