21008959 is an odd 8-digits composite number following 21008958
and preceding 21008960 . In scientific notation, it is written as 2.1008959 × 10^7.
The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors.
There are 20095504 positive integers (up to 21008959) that are relatively prime to 21008959.
21008959 has 4 divisors, whose sum is 21922416
The reverse of 21008959 is 95980012
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million eight thousand nine hundred fifty-nine
Scientific notation
2.1008959 × 10^7
Engineering notation
2.1008959 × 10^6
Prime Factorization
23 × 913433
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21008959
Product of the distinct prime numbers
The prime factorization of 21008959 is 23 × 913433.
Since it has a total of 2 prime factors.
4 , 4 , 81 , 70 , 456 , 783 , 9147 , 2270 , 5696 , 14376 , 829473 , 277163 , 4242477 , 966598 , 40561132 , 14021079 , 474413403 , 936070655 , 3776004400 , 7674246781
n×2
42017918
n×3
63026877
n×4
84035836
n×5
105044795
n÷2
10504479.5
n÷3
7002986.3333333
n÷3
5252239.75
n÷5
4201791.8
n2
441376358263681
n3
9.272857814331E+21
n4
1.9481308963411E+29
n5
4.0928202127863E+36
2 √n
4583.5530977616
3 √n
275.93164571365
4 √n
67.701943087046
5 √n
29.139420235885
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
-21008958
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 21008959 can be divided by 4 positive divisors.
The sum of these divisors (counting 21008959) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000001001001000111111
3
Ternary
1110112100212121
4
Quaternary
1100021020333
5
Quinary
20334241314
6
Senary
2030143411
8
Octal
120111077
10
Decimal
21008959
12
Duodecimal
7051b67
16
Hexadecimal
140923f
20
Vigesimal
6b627j
36
Base36
ciam7
md5
a4b83eebc40d1fdcc5f50f65418e1152
sha1
e300e544e55a39898cc3410303ddacc79e84a537
sha256
dc0f0c384ee18e34449c37e23e1b5a21230314666a8d48bdd2e046abab814616
sha512
c06c51b15979ecb5a53eafea8a5a750220d755648515cdf10ce062ecf3945ed61916149c40a6f55046fc9dd294738864dda831218842b70ea6d9d033382849cb
ripemd-160
a10094176b61d3ed2e9eb1fa626fec01aac673e1
Diameter
42017918
Circumference
132003182.50794
Area
1.3866247245894E+15
Volume
3.8842055983047E+22
Surface area
5.5464988983576E+15
Circumference
132003182.50794
Perimeter
84035836
Area
441376358263681
Diagonal
29711154.74914
Surface area
2648258149582086
Volume
9.272857814331E+21
Space diagonal
36388584.402131
Perimeter
63026877
Area
1.911215694431E+14
Altitude
18194292.201066
Surface area
1.911215694431E+14
Volume
1.092816773582E+21
Height
9903718.2497134