21695989 is an odd 8-digits composite number following 21695988
and preceding 21695990 . In scientific notation, it is written as 2.1695989 × 10^7.
The sum of its digits is 49. It has a total of 2 prime factors and 4 positive divisors.
There are 18526320 positive integers (up to 21695989) that are relatively prime to 21695989.
21695989 has 4 divisors, whose sum is 21709324
The reverse of 21695989 is 98959612
Previous prime number is 1897
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 49
Digital Root 4
Name
twenty-one million six hundred ninety-five thousand nine hundred eighty-nine
Scientific notation
2.1695989 × 10^7
Engineering notation
2.1695989 × 10^6
Prime Factorization
1897 × 11437
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21695989
Product of the distinct prime numbers
The prime factorization of 21695989 is 1897 × 11437.
Since it has a total of 2 prime factors.
5 , 5 , 95 , 49 , 769 , 643 , 8535 , 1452 , 22952 , 436 , 89104 , 796154 , 4748845 , 3355812 , 83109646 , 97168143 , 105851810 , 156199782 , 382509380 , 2270146493
n×2
43391978
n×3
65087967
n×4
86783956
n×5
108479945
n÷2
10847994.5
n÷3
7231996.3333333
n÷3
5423997.25
n÷5
4339197.8
n2
470715938688121
n3
1.0212647827902E+22
n4
2.2157349493504E+29
n5
4.8072561088022E+36
2 √n
4657.8953401724
3 √n
278.90725882171
4 √n
68.248775374892
5 √n
29.327557192948
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
-21695988
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 21695989 can be divided by 4 positive divisors.
The sum of these divisors (counting 21695989) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010110000110111110101
3
Ternary
1111211021022011
4
Quaternary
1102300313311
5
Quinary
21023232424
6
Senary
2053004221
8
Octal
122606765
10
Decimal
21695989
12
Duodecimal
7323671
16
Hexadecimal
14b0df5
20
Vigesimal
6fbjj9
36
Base36
cx0qd
md5
c40ce97bc67838795748371a939c26dc
sha1
1a81902aab1155e3bf036a82920841ddf86c83ce
sha256
62441720ec29ba9d26041aa1544ee06b939c3f415e5298d6ae1db452564a2bf3
sha512
de5d5fbc4b92525eacca1b9da82690081392d675bccc7af376ce3078d490493604bffadb97f18657a563458b65e954a71abf9fac2f8c7b73b5b0345b86083b1d
ripemd-160
ca577b73dd2f90fb0c3e45343b4cfa6a4d3255f2
Diameter
43391978
Circumference
136319919.30953
Area
1.4787977349102E+15
Volume
4.277863918645E+22
Surface area
5.9151909396409E+15
Circumference
136319919.30953
Perimeter
86783956
Area
470715938688121
Diagonal
30682761.892897
Surface area
2824295632128726
Volume
1.0212647827902E+22
Space diagonal
37578555.268455
Perimeter
65087967
Area
2.0382598043508E+14
Altitude
18789277.634228
Surface area
2.0382598043508E+14
Volume
1.2035720888299E+21
Height
10227587.297632