20531921 is an odd 8-digits composite number following 20531920
and preceding 20531922 . In scientific notation, it is written as 2.0531921 × 10^7.
The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors.
There are 20510052 positive integers (up to 20531921) that are relatively prime to 20531921.
20531921 has 4 divisors, whose sum is 20553792
The reverse of 20531921 is 12913502
Previous prime number is 983
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty million five hundred thirty-one thousand nine hundred twenty-one
Scientific notation
2.0531921 × 10^7
Engineering notation
2.0531921 × 10^6
Prime Factorization
983 × 20887
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20531921
Product of the distinct prime numbers
The prime factorization of 20531921 is 983 × 20887.
Since it has a total of 2 prime factors.
4 , 7 , 96 , 96 , 861 , 107 , 8514 , 5937 , 90030 , 62544 , 246752 , 235441 , 3904253 , 8711192 , 13439290 , 55387104 , 705039174 , 468040980 , 147537587 , 9589389166
n×2
41063842
n×3
61595763
n×4
82127684
n×5
102659605
n÷2
10265960.5
n÷3
6843973.6666667
n÷3
5132980.25
n÷5
4106384.2
n2
421559779950241
n3
8.6554320987157E+21
n4
1.777126480717E+29
n5
3.6487820509089E+36
2 √n
4531.2162826332
3 √n
273.82716380775
4 √n
67.314309642402
5 √n
29.005871383691
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
-20531920
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 20531921 can be divided by 4 positive divisors.
The sum of these divisors (counting 20531921) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110010100101011010001
3
Ternary
1102122010111112
4
Quaternary
1032110223101
5
Quinary
20224010141
6
Senary
2012023105
8
Octal
116245321
10
Decimal
20531921
12
Duodecimal
6a61a95
16
Hexadecimal
1394ad1
20
Vigesimal
6869g1
36
Base36
c82j5
md5
6c4d80e0b9637db5846d6634b9968535
sha1
4b4858b48167e5919eba462665b7ba2ce244ae5b
sha256
33baeb9ca1ba468604be9650518591031936be3fb1d1c03fa49037c4826f0845
sha512
06d1445b7a0024408fc87e2867b27f5c14b1bdb87aa08b1a613a7ccd6e635b8d003e83a0be102bd363a45ab7e4e7aa5aea3c9385e4f43756db2d4c04e5985f16
ripemd-160
d9d64d2791152ad5d8f39829d6d3b0df06c5951c
Diameter
41063842
Circumference
129005864.35537
Area
1.3243691077406E+15
Volume
3.6255789193294E+22
Surface area
5.2974764309624E+15
Circumference
129005864.35537
Perimeter
82127684
Area
421559779950241
Diagonal
29036521.139773
Surface area
2529358679701446
Volume
8.6554320987157E+21
Space diagonal
35562330.34899
Perimeter
61595763
Area
1.8254073932534E+14
Altitude
17781165.174495
Surface area
1.8254073932534E+14
Volume
1.0200524551836E+21
Height
9678840.3799243