20921357 is an odd 8-digits composite number following 20921356
and preceding 20921358 . In scientific notation, it is written as 2.0921357 × 10^7.
The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors.
There are 20120800 positive integers (up to 20921357) that are relatively prime to 20921357.
20921357 has 8 divisors, whose sum is 21736512
The reverse of 20921357 is 75312902
Previous prime number is 71
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty million nine hundred twenty-one thousand three hundred fifty-seven
Scientific notation
2.0921357 × 10^7
Engineering notation
2.0921357 × 10^6
Prime Factorization
41 × 71 × 7187
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20921357
Product of the distinct prime numbers
The prime factorization of 20921357 is 41 × 71 × 7187.
Since it has a total of 3 prime factors.
3 , 2 , 33 , 81 , 875 , 833 , 8856 , 4742 , 15728 , 70715 , 776193 , 668500 , 1512199 , 362572 , 67356208 , 63884558 , 485100445 , 31404902 , 678244471 , 3047943814
n×2
41842714
n×3
62764071
n×4
83685428
n×5
104606785
n÷2
10460678.5
n÷3
6973785.6666667
n÷3
5230339.25
n÷5
4184271.4
n2
437703178721449
n3
9.1573444620662E+21
n4
1.9158407266286E+29
n5
4.0081987796936E+36
2 √n
4573.9869916737
3 √n
275.54758988733
4 √n
67.631257504749
5 √n
29.115078813065
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
-20921356
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 20921357 can be divided by 8 positive divisors.
The sum of these divisors (counting 20921357) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111110011110000001101
3
Ternary
1110100220201002
4
Quaternary
1033303300031
5
Quinary
20323440412
6
Senary
2024230045
8
Octal
117636015
10
Decimal
20921357
12
Duodecimal
700b325
16
Hexadecimal
13f3c0d
20
Vigesimal
6af37h
36
Base36
cgf0t
md5
3153d276eb0140ae81828efb4af5b31e
sha1
db770650f3678f0a9374b9777e311d70552bec90
sha256
dd765df0bb0bae35e5bbab3e13f847cf5ff3e438b43cf69c821f491f74cd6d0e
sha512
6d5096760f552cee05f5b9382a97b903dd625322004dc08287b331283472ee3c872fa8d874b608150beda1858429fd9e2d468a51773b95632ffabe4eb8014e9c
ripemd-160
58c90f9fecb4f36aae4eac193bf2935b7bcf5682
Diameter
41842714
Circumference
131452762.90866
Area
1.3750850907242E+15
Volume
3.8358194784558E+22
Surface area
5.5003403628968E+15
Circumference
131452762.90866
Perimeter
83685428
Area
437703178721449
Diagonal
29587266.812649
Surface area
2626219072328694
Volume
9.1573444620662E+21
Space diagonal
36236853.287287
Perimeter
62764071
Area
1.8953103604499E+14
Altitude
18118426.643643
Surface area
1.8953103604499E+14
Volume
1.0792033944647E+21
Height
9862422.2708831