20921437 is an odd 8-digits composite number following 20921436
and preceding 20921438 . In scientific notation, it is written as 2.0921437 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 20911680 positive integers (up to 20921437) that are relatively prime to 20921437.
20921437 has 4 divisors, whose sum is 20931196
The reverse of 20921437 is 73412902
Previous prime number is 6577
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million nine hundred twenty-one thousand four hundred thirty-seven
Scientific notation
2.0921437 × 10^7
Engineering notation
2.0921437 × 10^6
Prime Factorization
6577 × 3181
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20921437
Product of the distinct prime numbers
The prime factorization of 20921437 is 6577 × 3181.
Since it has a total of 2 prime factors.
10 , 3 , 23 , 96 , 626 , 757 , 1002 , 6952 , 94339 , 39676 , 649462 , 393523 , 1831293 , 8617437 , 96263438 , 26021195 , 180032533 , 971142060 , 8838245915 , 6094971258
n×2
41842874
n×3
62764311
n×4
83685748
n×5
104607185
n÷2
10460718.5
n÷3
6973812.3333333
n÷3
5230359.25
n÷5
4184287.4
n2
437706526144969
n3
9.1574495112308E+21
n4
1.915870030299E+29
n5
4.0082754139088E+36
2 √n
4573.9957367711
3 √n
275.54794110386
4 √n
67.631322157497
5 √n
29.115101079333
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
-20921436
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 20921437 can be divided by 4 positive divisors.
The sum of these divisors (counting 20921437) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111110011110001011101
3
Ternary
1110100220211001
4
Quaternary
1033303301131
5
Quinary
20323441222
6
Senary
2024230301
8
Octal
117636135
10
Decimal
20921437
12
Duodecimal
700b391
16
Hexadecimal
13f3c5d
20
Vigesimal
6af3bh
36
Base36
cgf31
md5
77de72d92e80b16486b9896a15723e75
sha1
d66857d7c7ec52255f8e48882bc99162174fe278
sha256
275f1c50a403e9a38d1844568efdf4fde9043b6bd7e4e5d554cebb70dff2bb16
sha512
d8effcf69324a7205eb4d2b98f6fe2e5cb2d04a6021353b825ebd85d9a270b9bf5b77f1b3bfdf96cd8fe1cdb020f5dfaee545a5d60d5ddd3f48b564051889eb3
ripemd-160
3cb91a315be1b7de671c53ed5e2198637b176dda
Diameter
41842874
Circumference
131453265.56348
Area
1.3750956069653E+15
Volume
3.835863481347E+22
Surface area
5.5003824278614E+15
Circumference
131453265.56348
Perimeter
83685748
Area
437706526144969
Diagonal
29587379.949734
Surface area
2626239156869814
Volume
9.1574495112308E+21
Space diagonal
36236991.851351
Perimeter
62764311
Area
1.8953248552189E+14
Altitude
18118495.925676
Surface area
1.8953248552189E+14
Volume
1.0792157746275E+21
Height
9862459.9832448