21556947 is an odd 8-digits composite number following 21556946
and preceding 21556948 . In scientific notation, it is written as 2.1556947 × 10^7.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 13875680 positive integers (up to 21556947) that are relatively prime to 21556947.
21556947 has 8 divisors, whose sum is 29733840
The reverse of 21556947 is 74965512
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty-one million five hundred fifty-six thousand nine hundred forty-seven
Scientific notation
2.1556947 × 10^7
Engineering notation
2.1556947 × 10^6
Prime Factorization
3 × 29 × 247781
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21556947
Product of the distinct prime numbers
The prime factorization of 21556947 is 3 × 29 × 247781.
Since it has a total of 3 prime factors.
1 , 2 , 13 , 22 , 790 , 946 , 8932 , 2946 , 33177 , 66995 , 17273 , 829532 , 6975132 , 1535357 , 11655247 , 63229225 , 578704787 , 773886542 , 665749461 , 2555348188
n×2
43113894
n×3
64670841
n×4
86227788
n×5
107784735
n÷2
10778473.5
n÷3
7185649
n÷3
5389236.75
n÷5
4311389.4
n2
464701963960809
n3
1.0017555607899E+22
n4
2.1594791530903E+29
n5
4.6551777650773E+36
2 √n
4642.9459398102
3 √n
278.31017516415
4 √n
68.139165975305
5 √n
29.28987045036
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
-21556946
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 21556947 can be divided by 8 positive divisors.
The sum of these divisors (counting 21556947) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001110111011010011
3
Ternary
1111120012120110
4
Quaternary
1102032323103
5
Quinary
21004310242
6
Senary
2050012403
8
Octal
122167323
10
Decimal
21556947
12
Duodecimal
7277103
16
Hexadecimal
148eed3
20
Vigesimal
6eec77
36
Base36
cu1g3
md5
76314c9047860b32439b75f877e2b1e6
sha1
ee62090165d5eee9214f258e01c809c1dfde6f49
sha256
91c974dd34ddb936bb8645c1f2137fef494202f57cf0be0d10320abc42377283
sha512
59cdb8113d50d451ef69bb78a3618ea035abc1c406a95d668700ed11abae8717996726f13a107fbc7fcb259bd854c6a367be6df29f3c21f6b20916fb87aa6eed
ripemd-160
1dc3df483222def78abbe54592997410a20e1cbb
Diameter
43113894
Circumference
135446292.65805
Area
1.459904276088E+15
Volume
4.1961438806271E+22
Surface area
5.8396171043521E+15
Circumference
135446292.65805
Perimeter
86227788
Area
464701963960809
Diagonal
30486126.810758
Surface area
2788211783764854
Volume
1.0017555607899E+22
Space diagonal
37337727.460069
Perimeter
64670841
Area
2.0122185298929E+14
Altitude
18668863.730035
Surface area
2.0122185298929E+14
Volume
1.1805802502098E+21
Height
10162042.270253