21887894 is an even 8-digits composite number following 21887893
and preceding 21887895 . In scientific notation, it is written as 2.1887894 × 10^7.
The sum of its digits is 47. It has a total of 3 prime factors and 8 positive divisors.
There are 9380520 positive integers (up to 21887894) that are relatively prime to 21887894.
21887894 has 8 divisors, whose sum is 37522128
The reverse of 21887894 is 49878812
Previous prime number is 7
Is Prime? no
Number parity even
Number length 8
Sum of Digits 47
Digital Root 2
Name
twenty-one million eight hundred eighty-seven thousand eight hundred ninety-four
Scientific notation
2.1887894 × 10^7
Engineering notation
2.1887894 × 10^6
Prime Factorization
2 × 7 × 1563421
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21887894
Product of the distinct prime numbers
The prime factorization of 21887894 is 2 × 7 × 1563421.
Since it has a total of 3 prime factors.
1 , 10 , 55 , 1 , 769 , 364 , 5389 , 4484 , 40693 , 67161 , 2533 , 939363 , 6344763 , 7289273 , 94818179 , 41394604 , 477532958 , 743037939 , 1112189581 , 4395603407
n×2
43775788
n×3
65663682
n×4
87551576
n×5
109439470
n÷2
10943947
n÷3
7295964.6666667
n÷3
5471973.5
n÷5
4377578.8
n2
479079903755236
n3
1.0486050150925E+22
n4
2.2951755418213E+29
n5
5.0236558970776E+36
2 √n
4678.4499569836
3 √n
279.72717472814
4 √n
68.399195587255
5 √n
29.379256124433
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
-21887893
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 21887894 can be divided by 8 positive divisors.
The sum of these divisors (counting 21887894) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011011111101110010110
3
Ternary
1112012000112202
4
Quaternary
1103133232112
5
Quinary
21100403034
6
Senary
2101044502
8
Octal
123375626
10
Decimal
21887894
12
Duodecimal
73b6732
16
Hexadecimal
14dfb96
20
Vigesimal
6gfjee
36
Base36
d14t2
md5
26919be125f2e4f8a03d4a396d61a062
sha1
66bb5239574bc7925dc3b5b69606720261c5c0eb
sha256
dc017d60c804b7a814c1773fc5ad19804c3e22c3d769c009474e64937bd6af19
sha512
35e714983a4a8a3025dedbb118a481fcccf3121c76c162c3f706f831e31b84d2b8fe903878b81e29e5fbad684af2a6bd1a80a12287a5e7b15ef7ed512e1dcf93
ripemd-160
1ce4436ddcf3a7bb637181b57deaa4e109f74ef4
Diameter
43775788
Circumference
137525693.9859
Area
1.50507390612E+15
Volume
4.3923864159093E+22
Surface area
6.0202956244798E+15
Circumference
137525693.9859
Perimeter
87551576
Area
479079903755236
Diagonal
30954156.546585
Surface area
2874479422531416
Volume
1.0486050150925E+22
Space diagonal
37910944.478682
Perimeter
65663682
Area
2.0744768354732E+14
Altitude
18955472.239341
Surface area
2.0744768354732E+14
Volume
1.2357928615969E+21
Height
10318052.182195