21987357 is an odd 8-digits composite number following 21987356
and preceding 21987358 . In scientific notation, it is written as 2.1987357 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 12257280 positive integers (up to 21987357) that are relatively prime to 21987357.
21987357 has 8 divisors, whose sum is 25333696
The reverse of 21987357 is 75378912
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twenty-one million nine hundred eighty-seven thousand three hundred fifty-seven
Scientific notation
2.1987357 × 10^7
Engineering notation
2.1987357 × 10^6
Prime Factorization
123 × 7 × 25537
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21987357
Product of the distinct prime numbers
The prime factorization of 21987357 is 123 × 7 × 25537.
Since it has a total of 3 prime factors.
8 , 3 , 83 , 41 , 913 , 265 , 2361 , 6937 , 9192 , 53147 , 852060 , 997847 , 8516 , 2574693 , 50028117 , 81014862 , 362416557 , 678391674 , 4512463369 , 3403393036
n×2
43974714
n×3
65962071
n×4
87949428
n×5
109936785
n÷2
10993678.5
n÷3
7329119
n÷3
5496839.25
n÷5
4397471.4
n2
483443867845449
n3
1.0629652911779E+22
n4
2.3371797335737E+29
n5
5.1388405175249E+36
2 √n
4689.0678178077
3 √n
280.1502467448
4 √n
68.476768453306
5 √n
29.405908774109
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
-21987356
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 21987357 can be divided by 8 positive divisors.
The sum of these divisors (counting 21987357) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011111000000000011101
3
Ternary
1112101001222120
4
Quaternary
1103320000131
5
Quinary
21112043412
6
Senary
2103133153
8
Octal
123700035
10
Decimal
21987357
12
Duodecimal
74441b9
16
Hexadecimal
14f801d
20
Vigesimal
6h887h
36
Base36
d39jx
md5
8971285856614b31e6231429f36dcb88
sha1
c7ed7dd4734fcec3daa137c94d0778a6e20a2d4a
sha256
ffc1ff78d61cdadf45ee05655209fda93ac530e850d19c160f93c836be7c5db5
sha512
5ca02e82cad1035b1371ec52bb1ec8693322a2a76563901041a67ef16eb7e6378b97de003ee3fc2b5e14abe9098d5446530bb1a5421be49dc3ad38af0faa415f
ripemd-160
eda1f48d2c943fe4b10a95186ddffd5d99df5a12
Diameter
43974714
Circumference
138150638.44611
Area
1.5187837036463E+15
Volume
4.4525385997138E+22
Surface area
6.0751348145852E+15
Circumference
138150638.44611
Perimeter
87949428
Area
483443867845449
Diagonal
31094818.470139
Surface area
2900663207072694
Volume
1.0629652911779E+22
Space diagonal
38083219.448155
Perimeter
65962071
Area
2.0933733542898E+14
Altitude
19041609.724078
Surface area
2.0933733542898E+14
Volume
1.252716609263E+21
Height
10364939.490046