21686870 is an even 8-digits composite number following 21686869
and preceding 21686871 . In scientific notation, it is written as 2.1686870 × 10^7.
The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors.
There are 8674744 positive integers (up to 21686870) that are relatively prime to 21686870.
21686870 has 8 divisors, whose sum is 39036384
The reverse of 21686870 is 07868612
Previous prime number is 5
Is Prime? no
Number parity even
Number length 8
Sum of Digits 38
Digital Root 2
Name
twenty-one million six hundred eighty-six thousand eight hundred seventy
Scientific notation
2.1686870 × 10^7
Engineering notation
2.1686870 × 10^6
Prime Factorization
2 × 5 × 2168687
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21686870
Product of the distinct prime numbers
The prime factorization of 21686870 is 2 × 5 × 2168687.
Since it has a total of 3 prime factors.
4 , 6 , 41 , 16 , 522 , 432 , 7817 , 3251 , 64187 , 96067 , 911179 , 801015 , 3353347 , 7363194 , 9461400 , 62236531 , 333593290 , 65162616 , 2188352388 , 6478313251
n×2
43373740
n×3
65060610
n×4
86747480
n×5
108434350
n÷2
10843435
n÷3
7228956.6666667
n÷3
5421717.5
n÷5
4337374
n2
470320330396900
n3
1.0199775863675E+22
n4
2.2120121318465E+29
n5
4.7971619541778E+36
2 √n
4656.916361714
3 √n
278.86817768545
4 √n
68.24160286595
5 √n
29.325091456374
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
-21686869
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 21686870 can be divided by 8 positive divisors.
The sum of these divisors (counting 21686870) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010101110101001010110
3
Ternary
1111210210210102
4
Quaternary
1102232221112
5
Quinary
21022434440
6
Senary
2052454102
8
Octal
122565126
10
Decimal
21686870
12
Duodecimal
731a332
16
Hexadecimal
14aea56
20
Vigesimal
6fah3a
36
Base36
cwtp2
md5
6266f8a9fa9390adcf9dbf17dcb7245c
sha1
4dc45f4bdccd171121debd86eb138df250f8fb5a
sha256
1d86c9841f4fb57562e7defe8d3541fc0a22ba7afc4e6f1064350c32514a584d
sha512
4e72c844e39fe854acdf58d82d65432293593437101f44d3f558847fe617537d14f7c2b75fd7e5a9f7da7acb31c4d8dfe67ac649f5a7263759e4b3955ad840a9
ripemd-160
f8cdd51bb21e47a64d240633dcf9b2d65b2cded0
Diameter
43373740
Circumference
136262622.94271
Area
1.4775548948088E+15
Volume
4.2724721228777E+22
Surface area
5.9102195792353E+15
Circumference
136262622.94271
Perimeter
86747480
Area
470320330396900
Diagonal
30669865.679422
Surface area
2821921982381400
Volume
1.0199775863675E+22
Space diagonal
37562760.697141
Perimeter
65060610
Area
2.0365467702E+14
Altitude
18781380.348571
Surface area
2.0365467702E+14
Volume
1.2020551132979E+21
Height
10223288.559807