21090908 is an even 8-digits composite number following 21090907
and preceding 21090909 . In scientific notation, it is written as 2.1090908 × 10^7.
The sum of its digits is 29. It has a total of 4 prime factors and 12 positive divisors.
There are 10086912 positive integers (up to 21090908) that are relatively prime to 21090908.
21090908 has 12 divisors, whose sum is 38514000
The reverse of 21090908 is 80909012
Previous prime number is 23
Is Prime? no
Number parity even
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty-one million ninety thousand nine hundred eight
Scientific notation
2.1090908 × 10^7
Engineering notation
2.1090908 × 10^6
Prime Factorization
2 × 2 × 23 × 229249
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
10545454
Product of the distinct prime numbers
The prime factorization of 21090908 is 2 × 2 × 23 × 229249.
Since it has a total of 4 prime factors.
6 , 6 , 58 , 17 , 84 , 983 , 9984 , 2091 , 19234 , 98764 , 16756 , 1943 , 4460522 , 8177762 , 33347076 , 59940944 , 726051508 , 344833167 , 7494865814 , 6569342634
n×2
42181816
n×3
63272724
n×4
84363632
n×5
105454540
n÷2
10545454
n÷3
7030302.6666667
n÷3
5272727
n÷5
4218181.6
n2
444826400264464
n3
9.381792683949E+21
n4
1.9787052637224E+29
n5
4.1732690676285E+36
2 √n
4592.4838595253
3 √n
276.28995293104
4 √n
67.767867455936
5 √n
29.162117497653
1 , 2 , 4 , 23 , 46 , 92 , 229249 , 458498 , 916996 , 5272727 , 10545454 , 21090908
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21090907
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21090908 can be divided by 12 positive divisors.
The sum of these divisors (counting 21090908) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010000011101001001011100
3
Ternary
1110200112021202
4
Quaternary
1100131021130
5
Quinary
20344402113
6
Senary
2032015032
8
Octal
120351134
10
Decimal
21090908
12
Duodecimal
7091478
16
Hexadecimal
141d25c
20
Vigesimal
6bg758
36
Base36
ck1uk
md5
5d0de5b0f7bc4daa95e66f6bcc3b4b9a
sha1
ce4bcec84ac4a86aa41bbcac835c83d511fa306e
sha256
b8694220cffae35aa980485ecb938e6fbbb5403895caeb657e7417c28cbc9267
sha512
19b74baff13599ca0dd0ed66aae06b48bba4a937019f42f5cf49395d932f34355b8cf09e6faa6421c1c5b1207f1fb20f176a96fb2ece2776fbe0a8959869071c
ripemd-160
93d9f06d2bd6b2f95ff551962506b3626858a0bb
Diameter
42181816
Circumference
132518083.26068
Area
1.3974633511936E+15
Volume
3.9298361297862E+22
Surface area
5.5898534047745E+15
Circumference
132518083.26068
Perimeter
84363632
Area
444826400264464
Diagonal
29827048.136363
Surface area
2668958401586784
Volume
9.381792683949E+21
Space diagonal
36530524.233761
Perimeter
63272724
Area
1.9261548145151E+14
Altitude
18265262.11688
Surface area
1.9261548145151E+14
Volume
1.1056548710844E+21
Height
9942349.3787877