21686893 is an odd 8-digits composite number following 21686892
and preceding 21686894 . In scientific notation, it is written as 2.1686893 × 10^7.
The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors.
There are 21677308 positive integers (up to 21686893) that are relatively prime to 21686893.
21686893 has 4 divisors, whose sum is 21696480
The reverse of 21686893 is 39868612
Previous prime number is 3659
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7
Name
twenty-one million six hundred eighty-six thousand eight hundred ninety-three
Scientific notation
2.1686893 × 10^7
Engineering notation
2.1686893 × 10^6
Prime Factorization
3659 × 5927
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21686893
Product of the distinct prime numbers
The prime factorization of 21686893 is 3659 × 5927.
Since it has a total of 2 prime factors.
7 , 8 , 58 , 68 , 86 , 892 , 6709 , 7364 , 27611 , 25419 , 291641 , 612191 , 4503320 , 3489670 , 19693294 , 70049048 , 816812847 , 212962633 , 3100693039 , 3783678708
n×2
43373786
n×3
65060679
n×4
86747572
n×5
108434465
n÷2
10843446.5
n÷3
7228964.3333333
n÷3
5421723.25
n÷5
4337378.6
n2
470321327993449
n3
1.0199808315812E+22
n4
2.2120215156552E+29
n5
4.7971873923712E+36
2 √n
4656.9188311586
3 √n
278.86827626992
4 √n
68.241620959343
5 √n
29.325097676514
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21686892
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21686893 can be divided by 4 positive divisors.
The sum of these divisors (counting 21686893) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010101110101001101101
3
Ternary
1111210210211021
4
Quaternary
1102232221231
5
Quinary
21022440033
6
Senary
2052454141
8
Octal
122565155
10
Decimal
21686893
12
Duodecimal
731a351
16
Hexadecimal
14aea6d
20
Vigesimal
6fah4d
36
Base36
cwtpp
md5
c803c75d98bd006c9577122f45f7029b
sha1
0a769364aa82439c816525b940fc8a4ddb6687e3
sha256
db9da3bc449bb2dc19c49d66ebbdfb145b7c1872f780fdfa003dc53d227bc70d
sha512
8a944d68a768d920a5b20f0d597d3fb3683b9ec413d6dfa47f5d48516f2c08f293a253def19af728d339b25733da39d6e4a0aea01020830d649a17654f0d971b
ripemd-160
ddbc79e40bcda82118dab1b42bdd9cd12359c38a
Diameter
43373786
Circumference
136262767.45598
Area
1.4775580288508E+15
Volume
4.2724857163971E+22
Surface area
5.9102321154033E+15
Circumference
136262767.45598
Perimeter
86747572
Area
470321327993449
Diagonal
30669898.206334
Surface area
2821927967960694
Volume
1.0199808315812E+22
Space diagonal
37562800.53431
Perimeter
65060679
Area
2.0365510899198E+14
Altitude
18781400.267155
Surface area
2.0365510899198E+14
Volume
1.2020589378189E+21
Height
10223299.402111