21997688 is an even 8-digits composite number following 21997687
and preceding 21997689 . In scientific notation, it is written as 2.1997688 × 10^7.
The sum of its digits is 50. It has a total of 4 prime factors and 8 positive divisors.
There are 10998840 positive integers (up to 21997688) that are relatively prime to 21997688.
21997688 has 8 divisors, whose sum is 41245680
The reverse of 21997688 is 88679912
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 50
Digital Root 5
Name
twenty-one million nine hundred ninety-seven thousand six hundred eighty-eight
Scientific notation
2.1997688 × 10^7
Engineering notation
2.1997688 × 10^6
Prime Factorization
2 × 2 × 2 × 2749711
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
5499422
Product of the distinct prime numbers
The prime factorization of 21997688 is 2 × 2 × 2 × 2749711.
Since it has a total of 4 prime factors.
3 , 7 , 25 , 95 , 829 , 241 , 8900 , 145 , 80358 , 27128 , 572811 , 528585 , 7033670 , 7345316 , 17766841 , 51732219 , 26025332 , 562276235 , 3465484724 , 1160746634
n×2
43995376
n×3
65993064
n×4
87990752
n×5
109988440
n÷2
10998844
n÷3
7332562.6666667
n÷3
5499422
n÷5
4399537.6
n2
483898277345344
n3
1.064464332878E+22
n4
2.3415754281779E+29
n5
5.1509245697524E+36
2 √n
4690.1692933198
3 √n
280.19411709299
4 √n
68.484810675943
5 √n
29.408671592428
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
-21997687
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 21997688 can be divided by 8 positive divisors.
The sum of these divisors (counting 21997688) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011111010100001111000
3
Ternary
1112101121011012
4
Quaternary
1103322201320
5
Quinary
21112411223
6
Senary
2103253052
8
Octal
123724170
10
Decimal
21997688
12
Duodecimal
744a188
16
Hexadecimal
14fa878
20
Vigesimal
6h9e48
36
Base36
d3hiw
md5
68d00caf51f1176ee20a2564646f8984
sha1
72dcc75c9032c36fb5030a16caf1f4bd2ad32dbe
sha256
d1ddb8d5224f8093ebefbcfb9d782927125c6e37132d0f62f1c5f25754e37295
sha512
188affc5579691d025044362b35cdc807ad4a84e22773c80fd1524a6f152adeda2ba269e639ac0dc1ff76f7ce21455b69b5b5848591da1eba3d30c27bbfb30c9
ripemd-160
11f0a36e9c57fbf436f23219a0e8e9742c9519f2
Diameter
43995376
Circumference
138215550.03352
Area
1.5202112731929E+15
Volume
4.458817770904E+22
Surface area
6.0808450927716E+15
Circumference
138215550.03352
Perimeter
87990752
Area
483898277345344
Diagonal
31109428.710452
Surface area
2903389664072064
Volume
1.064464332878E+22
Space diagonal
38101113.265048
Perimeter
65993064
Area
2.095341005143E+14
Altitude
19050556.632524
Surface area
2.095341005143E+14
Volume
1.2544832468488E+21
Height
10369809.570151