20921837 is an odd 8-digits composite number following 20921836
and preceding 20921838 . In scientific notation, it is written as 2.0921837 × 10^7.
The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors.
There are 20736576 positive integers (up to 20921837) that are relatively prime to 20921837.
20921837 has 4 divisors, whose sum is 21107100
The reverse of 20921837 is 73812902
Previous prime number is 113
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty million nine hundred twenty-one thousand eight hundred thirty-seven
Scientific notation
2.0921837 × 10^7
Engineering notation
2.0921837 × 10^6
Prime Factorization
113 × 185149
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20921837
Product of the distinct prime numbers
The prime factorization of 20921837 is 113 × 185149.
Since it has a total of 2 prime factors.
10 , 6 , 55 , 4 , 498 , 565 , 7044 , 3397 , 41750 , 2989 , 919284 , 102645 , 536275 , 9217089 , 80479180 , 51249380 , 709250611 , 451999899 , 3931443100 , 9308939776
n×2
41843674
n×3
62765511
n×4
83687348
n×5
104609185
n÷2
10460918.5
n÷3
6973945.6666667
n÷3
5230459.25
n÷5
4184367.4
n2
437723263454569
n3
9.1579747691045E+21
n4
1.9160165536932E+29
n5
4.008658602567E+36
2 √n
4574.0394620073
3 √n
275.54969717307
4 √n
67.631645418453
5 √n
29.115212409653
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
-20921836
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 20921837 can be divided by 4 positive divisors.
The sum of these divisors (counting 20921837) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111110011110111101101
3
Ternary
1110100221100212
4
Quaternary
1033303313231
5
Quinary
20323444322
6
Senary
2024232205
8
Octal
117636755
10
Decimal
20921837
12
Duodecimal
700b665
16
Hexadecimal
13f3ded
20
Vigesimal
6af4bh
36
Base36
cgfe5
md5
0295b31ad5ad281df7101b19cb024652
sha1
2dd4363f01ad2ceb3f6299eb0dfe7de5060b555b
sha256
b8fbec4866e50093a160c54a152216ed22c723e705510dd90ace715edd231501
sha512
a1c318f2ac22f0763d7df36416183bcfcf2bf2ccebd5f0abcf2203e7f032953460d16d975f5456ab7c2e3920e161b4b6f52e5fd2c442309bb6fae83fad546e02
ripemd-160
cb2dac6fb9597520abfce19f3546e0ee683b8715
Diameter
41843674
Circumference
131455778.83761
Area
1.3751481887742E+15
Volume
3.8360835008506E+22
Surface area
5.5005927550969E+15
Circumference
131455778.83761
Perimeter
83687348
Area
437723263454569
Diagonal
29587945.635159
Surface area
2626339580727414
Volume
9.1579747691045E+21
Space diagonal
36237684.671674
Perimeter
62765511
Area
1.8953973298954E+14
Altitude
18118842.335837
Surface area
1.8953973298954E+14
Volume
1.0792776768615E+21
Height
9862648.5450531