20210931 is an odd 8-digits composite number following 20210930
and preceding 20210932 . In scientific notation, it is written as 2.0210931 × 10^7.
The sum of its digits is 18. It has a total of 4 prime factors and 16 positive divisors.
There are 12247200 positive integers (up to 20210931) that are relatively prime to 20210931.
20210931 has 16 divisors, whose sum is 27595008
The reverse of 20210931 is 13901202
Previous prime number is 71
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9
Name
twenty million two hundred ten thousand nine hundred thirty-one
Scientific notation
2.0210931 × 10^7
Engineering notation
2.0210931 × 10^6
Prime Factorization
3 × 117 × 71 × 811
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20210931
Product of the distinct prime numbers
The prime factorization of 20210931 is 3 × 117 × 71 × 811.
Since it has a total of 4 prime factors.
7 , 1 , 26 , 88 , 744 , 993 , 3455 , 3246 , 93721 , 36362 , 251589 , 135753 , 776522 , 9511190 , 1709990 , 68730182 , 377748505 , 714638191 , 973919285 , 9520210050
n×2
40421862
n×3
60632793
n×4
80843724
n×5
101054655
n÷2
10105465.5
n÷3
6736977
n÷3
5052732.75
n÷5
4042186.2
n2
408481731886761
n3
8.2557960979238E+21
n4
1.6685732528521E+29
n5
3.3723418881839E+36
2 √n
4495.6569041687
3 √n
272.39268450536
4 √n
67.049659985482
5 √n
28.914605003972
1 , 3 , 71 , 117 , 213 , 351 , 811 , 2433 , 8307 , 24921 , 57581 , 94887 , 172743 , 284661 , 6736977 , 20210931
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20210930
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20210931 can be divided by 16 positive divisors.
The sum of these divisors (counting 20210931) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001101000110010011110011
3
Ternary
1102000211012000
4
Quaternary
1031012103303
5
Quinary
20133222211
6
Senary
2001105043
8
Octal
115062363
10
Decimal
20210931
12
Duodecimal
6928183
16
Hexadecimal
13464f3
20
Vigesimal
66676b
36
Base36
c16ur
md5
d59c40730994120008aeee3c1c635365
sha1
0924a37916bae537f1b12dfabccc262aadeb4c6c
sha256
4d5fc90ec3c4b8f2a5e34f625875f429b9023bb3149bc112c2aacf34cee944dc
sha512
e4c164425932ddd1f60ccc29b8f18850f0da39045ec14abefaef8c52ac2d3153bf132cf4c3563469dc88c75d1afc7310fcf68b56c24a7fc9e81c8dab51eb1fe1
ripemd-160
d683041bcaa07c8a3270d1f3b0a5022652285044
Diameter
40421862
Circumference
126989024.70362
Area
1.2832832080211E+15
Volume
3.4581797827697E+22
Surface area
5.1331328320843E+15
Circumference
126989024.70362
Perimeter
80843724
Area
408481731886761
Diagonal
28582572.728387
Surface area
2450890391320566
Volume
8.2557960979238E+21
Space diagonal
35006359.360269
Perimeter
60632793
Area
1.768777783979E+14
Altitude
17503179.680134
Surface area
1.768777783979E+14
Volume
9.7295490082256E+20
Height
9527524.2427956