21077905 is an odd 8-digits composite number following 21077904
and preceding 21077906 . In scientific notation, it is written as 2.1077905 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 16760688 positive integers (up to 21077905) that are relatively prime to 21077905.
21077905 has 8 divisors, whose sum is 25445952
The reverse of 21077905 is 50977012
Previous prime number is 167
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million seventy-seven thousand nine hundred five
Scientific notation
2.1077905 × 10^7
Engineering notation
2.1077905 × 10^6
Prime Factorization
5 × 167 × 25243
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21077905
Product of the distinct prime numbers
The prime factorization of 21077905 is 5 × 167 × 25243.
Since it has a total of 3 prime factors.
6 , 5 , 19 , 89 , 578 , 761 , 6554 , 4443 , 93815 , 48218 , 262919 , 208646 , 8883393 , 7142503 , 29339947 , 24346809 , 564890739 , 410501425 , 3205203585 , 4227967801
n×2
42155810
n×3
63233715
n×4
84311620
n×5
105389525
n÷2
10538952.5
n÷3
7025968.3333333
n÷3
5269476.25
n÷5
4215581
n2
444278079189025
n3
9.3644511467287E+21
n4
1.9738301164789E+29
n5
4.1604203681281E+36
2 √n
4591.0679585473
3 √n
276.23316168533
4 √n
67.757419951968
5 √n
29.158520795594
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
-21077904
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 21077905 can be divided by 8 positive divisors.
The sum of these divisors (counting 21077905) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000011001111110010001
3
Ternary
1110122212110011
4
Quaternary
1100121332101
5
Quinary
20343443110
6
Senary
2031434521
8
Octal
120317621
10
Decimal
21077905
12
Duodecimal
7085a41
16
Hexadecimal
1419f91
20
Vigesimal
6beef5
36
Base36
cjrtd
md5
7d9c44fcf8faa9d5b4a1e741daa81744
sha1
61f31a46fb35de584088a7db0ce20056a121d96c
sha256
0238838ebd93b2846c1e9592f1cf724675f6a3fab476cc6556dd35559f10da2c
sha512
86efd1e7eac2ebde871a2d942bee841ebb982a5fb57962507188cc0c7f049fc1d4a5d8fefe351db7514f94e97287748a1727a0a38751b4ff60e425597e5bb4e1
ripemd-160
99e2f6e22639e9fa99470b5437339379ed70f5c1
Diameter
42155810
Circumference
132436383.00213
Area
1.3957407497312E+15
Volume
3.9225721236618E+22
Surface area
5.5829629989249E+15
Circumference
132436383.00213
Perimeter
84311620
Area
444278079189025
Diagonal
29808659.117412
Surface area
2665668475134150
Volume
9.3644511467287E+21
Space diagonal
36508002.37711
Perimeter
63233715
Area
1.9237805146113E+14
Altitude
18254001.188555
Surface area
1.9237805146113E+14
Volume
1.1036111513237E+21
Height
9936219.7058039