20889721 is an odd 8-digits composite number following 20889720
and preceding 20889722 . In scientific notation, it is written as 2.0889721 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 19790244 positive integers (up to 20889721) that are relatively prime to 20889721.
20889721 has 4 divisors, whose sum is 21989200
The reverse of 20889721 is 12798802
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty million eight hundred eighty-nine thousand seven hundred twenty-one
Scientific notation
2.0889721 × 10^7
Engineering notation
2.0889721 × 10^6
Prime Factorization
19 × 1099459
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20889721
Product of the distinct prime numbers
The prime factorization of 20889721 is 19 × 1099459.
Since it has a total of 2 prime factors.
5 , 2 , 59 , 4 , 310 , 969 , 1814 , 1096 , 77851 , 11330 , 957405 , 141147 , 4049383 , 8981322 , 98244022 , 84752727 , 133961191 , 554774470 , 880981829 , 7961684125
n×2
41779442
n×3
62669163
n×4
83558884
n×5
104448605
n÷2
10444860.5
n÷3
6963240.3333333
n÷3
5222430.25
n÷5
4177944.2
n2
436380443457841
n3
9.1158657136906E+21
n4
1.9042789143246E+29
n5
3.9779855226424E+36
2 √n
4570.5274312709
3 √n
275.4086310691
4 √n
67.605676028503
5 √n
29.106268273074
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
-20889720
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 20889721 can be divided by 4 positive divisors.
The sum of these divisors (counting 20889721) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111101100000001111001
3
Ternary
1110022022022101
4
Quaternary
1033230001321
5
Quinary
20321432341
6
Senary
2023423401
8
Octal
117540171
10
Decimal
20889721
12
Duodecimal
6bb4b61
16
Hexadecimal
13ec079
20
Vigesimal
6ab461
36
Base36
cfqm1
md5
119610626c2ee9ad7efe55e25654b557
sha1
f0ec83950b6212583193b2fbb7c7e0628239d708
sha256
bed4ffa86288e8757c9dfdd67e2b13670b6f7262cbd05b0aa26b7de9f7ebb71c
sha512
2e9cbbeb3f3db6e61138d98ce1822db40eaba3f602be4daa3278ae880465b8dcc1a1f0a5ae80d5e98500b0201f3c8abefe7631f0d1b03d8362f9e662486d1a76
ripemd-160
713309a4d5d90e81f11787d4f02ed4c5565fc41d
Diameter
41779442
Circumference
131253988.05828
Area
1.3709295953374E+15
Volume
3.8184449009655E+22
Surface area
5.4837183813496E+15
Circumference
131253988.05828
Perimeter
83558884
Area
436380443457841
Diagonal
29542526.75239
Surface area
2618282660747046
Volume
9.1158657136906E+21
Space diagonal
36182058.127939
Perimeter
62669163
Area
1.889582748746E+14
Altitude
18091029.063969
Surface area
1.889582748746E+14
Volume
1.0743150770894E+21
Height
9847508.9174634