21690747 is an odd 8-digits composite number following 21690746
and preceding 21690748 . In scientific notation, it is written as 2.1690747 × 10^7.
The sum of its digits is 36. It has a total of 4 prime factors and 12 positive divisors.
There are 13347504 positive integers (up to 21690747) that are relatively prime to 21690747.
21690747 has 12 divisors, whose sum is 26244400
The reverse of 21690747 is 74709612
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty-one million six hundred ninety thousand seven hundred forty-seven
Scientific notation
2.1690747 × 10^7
Engineering notation
2.1690747 × 10^6
Prime Factorization
13 × 9 × 9 × 20599
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
2410083
Product of the distinct prime numbers
The prime factorization of 21690747 is 13 × 9 × 9 × 20599.
Since it has a total of 4 prime factors.
4 , 7 , 97 , 90 , 149 , 188 , 9640 , 4826 , 61574 , 42428 , 53944 , 37338 , 6484650 , 4951096 , 36817052 , 2844294 , 585057013 , 16565841 , 3989757410 , 2978358833
n×2
43381494
n×3
65072241
n×4
86762988
n×5
108453735
n÷2
10845373.5
n÷3
7230249
n÷3
5422686.75
n÷5
4338149.4
n2
470488505418009
n3
1.020524713743E+22
n4
2.2135943373047E+29
n5
4.8014514731109E+36
2 √n
4657.3326056875
3 √n
278.88479461393
4 √n
68.244652579433
5 √n
29.32613988107
1 , 9 , 13 , 81 , 117 , 1053 , 20599 , 185391 , 267787 , 1668519 , 2410083 , 21690747
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
-21690746
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 21690747 can be divided by 12 positive divisors.
The sum of these divisors (counting 21690747) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010010101111100101111011
3
Ternary
1111211000010000
4
Quaternary
1102233211323
5
Quinary
21023100442
6
Senary
2052524043
8
Octal
122574573
10
Decimal
21690747
12
Duodecimal
7320623
16
Hexadecimal
14af97b
20
Vigesimal
6fb6h7
36
Base36
cwwor
md5
b1acb0fa26e3baa5bc06a0ed4c0d6425
sha1
349289bd779188f592f81893d582fd4c3e4ffed9
sha256
ff199bc42ff00b420bae433d2b7a3586893f1adc585ead6af747b3d2ea477064
sha512
f799151116531b5993937453cf2223bd331cb449a602fe5bf627449b0bdd00706eee6814bfc091196420b65abc14b05a22eb31970abf76267d2efb7fa6af77a6
ripemd-160
9e3093e295eb78793f75a188da5d461e0af9d2e7
Diameter
43381494
Circumference
136286982.85215
Area
1.4780832322197E+15
Volume
4.2747639246692E+22
Surface area
5.9123329288786E+15
Circumference
136286982.85215
Perimeter
86762988
Area
470488505418009
Diagonal
30675348.585404
Surface area
2822931032508054
Volume
1.020524713743E+22
Space diagonal
37569475.858122
Perimeter
65072241
Area
2.0372749894028E+14
Altitude
18784737.929061
Surface area
2.0372749894028E+14
Volume
1.2026999090936E+21
Height
10225116.195135