21003887 is an odd 8-digits prime number following 21003886
and preceding 21003888 . In scientific notation, it is written as 2.1003887 × 10^7.
The sum of its digits is 29. It has a total of 1 prime factors and 2 positive divisors.
There are 21003886 positive integers (up to 21003887) that are relatively prime to 21003887.
21003887 has 2 divisors, whose sum is 21003888
The reverse of 21003887 is 78830012
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty-one million three thousand eight hundred eighty-seven
Scientific notation
2.1003887 × 10^7
Engineering notation
2.1003887 × 10^6
Prime Factorization
21003887
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21003887
Product of the distinct prime numbers
The prime factorization of 21003887 is 21003887.
Since it has a total of 1 prime factors.
7 , 1 , 46 , 6 , 486 , 302 , 7852 , 8263 , 99424 , 16866 , 516940 , 43619 , 7277360 , 665520 , 31812148 , 59973204 , 919039801 , 182540827 , 6650711104 , 2379272001
n×2
42007774
n×3
63011661
n×4
84015548
n×5
105019435
n÷2
10501943.5
n÷3
7001295.6666667
n÷3
5250971.75
n÷5
4200777.4
n2
441163269108769
n3
9.2661434529112E+21
n4
1.9462503001074E+29
n5
4.0878821377171E+36
2 √n
4582.9997818023
3 √n
275.90943871223
4 √n
67.697856552496
5 √n
29.138013127481
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21003888
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10501944
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4582.9998909012
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999047795
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21003887 can be divided by 2 positive divisors.
The sum of these divisors (counting 21003887) is 21003888, the average is 10501944.
Base
System
Value
2
Binary
1010000000111111001101111
3
Ternary
1110112002220202
4
Quaternary
1100013321233
5
Quinary
20334111022
6
Senary
2030104115
8
Octal
120077157
10
Decimal
21003887
12
Duodecimal
704b03b
16
Hexadecimal
1407e6f
20
Vigesimal
6b59e7
36
Base36
ci6pb
md5
c71c7d2452a5d8f525f50f7f0792d1f3
sha1
eb913c91ce06b077623e718867915586ffda8821
sha256
dc736040aa6cc447b60238c5f5e80a7b136997c1d5941e58e26a50bfec8deb07
sha512
16c5f020e848929d179a8c182e22f8ce2eea278b0c44a8037ca57d7a4a3208d70acecdaf8907792a4b6b2eab3200e6b83ffe844134645b52081154eb4a652832
ripemd-160
df23a4c60f5b2b66d7c9b190e1e61d51e5dd950a
Diameter
42007774
Circumference
131971314.19206
Area
1.3859552852658E+15
Volume
3.88139309317E+22
Surface area
5.5438211410631E+15
Circumference
131971314.19206
Perimeter
84015548
Area
441163269108769
Diagonal
29703981.857952
Surface area
2646979614652614
Volume
9.2661434529112E+21
Space diagonal
36379799.440435
Perimeter
63011661
Area
1.9102929913239E+14
Altitude
18189899.720218
Surface area
1.9102929913239E+14
Volume
1.0920254785001E+21
Height
9901327.285984