21553947 is an odd 8-digits composite number following 21553946
and preceding 21553948 . In scientific notation, it is written as 2.1553947 × 10^7.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 14346720 positive integers (up to 21553947) that are relatively prime to 21553947.
21553947 has 8 divisors, whose sum is 23986480
The reverse of 21553947 is 74935512
Previous prime number is 811
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty-one million five hundred fifty-three thousand nine hundred forty-seven
Scientific notation
2.1553947 × 10^7
Engineering notation
2.1553947 × 10^6
Prime Factorization
9 × 811 × 2953
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21553947
Product of the distinct prime numbers
The prime factorization of 21553947 is 9 × 811 × 2953.
Since it has a total of 3 prime factors.
7 , 9 , 96 , 23 , 219 , 527 , 5520 , 400 , 73136 , 5387 , 57290 , 35134 , 1225340 , 9309197 , 56877437 , 10778008 , 584857242 , 977949405 , 2127820356 , 2976263473
n×2
43107894
n×3
64661841
n×4
86215788
n×5
107769735
n÷2
10776973.5
n÷3
7184649
n÷3
5388486.75
n÷5
4310789.4
n2
464572631278809
n3
1.0013373872234E+22
n4
2.1582772973332E+29
n5
4.6519394478022E+36
2 √n
4642.6228578251
3 √n
278.29726410181
4 √n
68.13679518311
5 √n
29.289055172546
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21553946
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21553947 can be divided by 8 positive divisors.
The sum of these divisors (counting 21553947) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001110001100011011
3
Ternary
1111120001110100
4
Quaternary
1102032030123
5
Quinary
21004211242
6
Senary
2045550443
8
Octal
122161433
10
Decimal
21553947
12
Duodecimal
7275423
16
Hexadecimal
148e31b
20
Vigesimal
6ee4h7
36
Base36
ctz4r
md5
6471c389637278d140956bb00b2c0b63
sha1
48bed74ad61b6b9fa8207c85082646394cbfcb34
sha256
a02729579d4d9ab094102e649f6cf4813ef1c1b4fc53769a026826159d917a3c
sha512
e4bca0fe3c93bf137dd8523110b3f6d7cadd90db30cb9d2a06085030eda91915b9c2b3c13670532bf8bece45fb8c295a929b399c26e3c07f3dfa09025aee44b3
ripemd-160
fba54f69db03d582d5e7769e3e9ab31ef7a86033
Diameter
43107894
Circumference
135427443.10213
Area
1.4594979654844E+15
Volume
4.1943922392878E+22
Surface area
5.8379918619375E+15
Circumference
135427443.10213
Perimeter
86215788
Area
464572631278809
Diagonal
30481884.170071
Surface area
2787435787672854
Volume
1.0013373872234E+22
Space diagonal
37332531.307647
Perimeter
64661841
Area
2.0116585029521E+14
Altitude
18666265.653823
Surface area
2.0116585029521E+14
Volume
1.1800874279355E+21
Height
10160628.05669