20902021 is an odd 8-digits composite number following 20902020
and preceding 20902022 . In scientific notation, it is written as 2.0902021 × 10^7.
The sum of its digits is 16. It has a total of 2 prime factors and 4 positive divisors.
There are 17916012 positive integers (up to 20902021) that are relatively prime to 20902021.
20902021 has 4 divisors, whose sum is 23888032
The reverse of 20902021 is 12020902
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 16
Digital Root 7
Name
twenty million nine hundred two thousand twenty-one
Scientific notation
2.0902021 × 10^7
Engineering notation
2.0902021 × 10^6
Prime Factorization
7 × 2986003
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20902021
Product of the distinct prime numbers
The prime factorization of 20902021 is 7 × 2986003.
Since it has a total of 2 prime factors.
8 , 7 , 1 , 64 , 12 , 226 , 2046 , 9166 , 41554 , 85114 , 15415 , 493434 , 6724058 , 5170459 , 52500977 , 97662377 , 180152333 , 441322268 , 3972810997 , 8897579410
n×2
41804042
n×3
62706063
n×4
83608084
n×5
104510105
n÷2
10451010.5
n÷3
6967340.3333333
n÷3
5225505.25
n÷5
4180404.2
n2
436894481884441
n3
9.1319776351327E+21
n4
1.9087678830107E+29
n5
3.9897106374816E+36
2 √n
4571.8728110043
3 √n
275.46267457873
4 √n
67.615625494439
5 √n
29.109695057096
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
-20902020
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 20902021 can be divided by 4 positive divisors.
The sum of these divisors (counting 20902021) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111101111000010000101
3
Ternary
1110022221011221
4
Quaternary
1033233002011
5
Quinary
20322331041
6
Senary
2024000341
8
Octal
117570205
10
Decimal
20902021
12
Duodecimal
70000b1
16
Hexadecimal
13ef085
20
Vigesimal
6acf11
36
Base36
cg03p
md5
d3fb89ef01727ff60737c82789fd2252
sha1
8363615f4f7a1373333f25a692551edf34f63b1c
sha256
463bf491f6f1ccf794a6537c545a89faced3a6448b78c4a3cb9e6995e3d352d3
sha512
0a596c88137b6b1fa1bc77c038e410931b59b375feb605eac71c60060a30f7235d46df056567f9ccbcd22df4dbf98a732dc0ff7f636b1eebdcbb5a3050918aa2
ripemd-160
d69aa9f1845b0d98db7877bce8137c15b13ff8bd
Diameter
41804042
Circumference
131331271.23756
Area
1.3725444946821E+15
Volume
3.8251938468372E+22
Surface area
5.4901779787283E+15
Circumference
131331271.23756
Perimeter
83608084
Area
436894481884441
Diagonal
29559921.579207
Surface area
2621366891306646
Volume
9.1319776351327E+21
Space diagonal
36203362.352872
Perimeter
62706063
Area
1.8918086004258E+14
Altitude
18101681.176436
Surface area
1.8918086004258E+14
Volume
1.076213885241E+21
Height
9853307.1930691