20987029 is an odd 8-digits composite number following 20987028
and preceding 20987030 . In scientific notation, it is written as 2.0987029 × 10^7.
The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors.
There are 17502480 positive integers (up to 20987029) that are relatively prime to 20987029.
20987029 has 8 divisors, whose sum is 24633728
The reverse of 20987029 is 92078902
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty million nine hundred eighty-seven thousand twenty-nine
Scientific notation
2.0987029 × 10^7
Engineering notation
2.0987029 × 10^6
Prime Factorization
37 × 7 × 81031
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20987029
Product of the distinct prime numbers
The prime factorization of 20987029 is 37 × 7 × 81031.
Since it has a total of 3 prime factors.
6 , 4 , 40 , 23 , 189 , 30 , 6353 , 2871 , 35462 , 87088 , 187608 , 682006 , 8693740 , 6553202 , 41449162 , 99384684 , 798010682 , 181946557 , 402187308 , 623976806
n×2
41974058
n×3
62961087
n×4
83948116
n×5
104935145
n÷2
10493514.5
n÷3
6995676.3333333
n÷3
5246757.25
n÷5
4197405.8
n2
440455386246841
n3
9.2438499643687E+21
n4
1.9400094727385E+29
n5
4.0715035064638E+36
2 √n
4581.1602242227
3 √n
275.83560275563
4 √n
67.684268661356
5 √n
29.133334313492
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
-20987028
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 20987029 can be divided by 8 positive divisors.
The sum of these divisors (counting 20987029) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000000011110010010101
3
Ternary
1110111020210101
4
Quaternary
1100003302111
5
Quinary
20333041104
6
Senary
2025454101
8
Octal
120036225
10
Decimal
20987029
12
Duodecimal
7041331
16
Hexadecimal
1403c95
20
Vigesimal
6b37b9
36
Base36
chtp1
md5
4db05d991e79fe0a4565d10953f603cb
sha1
19505fc623d9ea57df7b2390cd03f93078e40ade
sha256
a6850e6dd56d9015c4b7a9232c0ea05c49f3c247358e68cb99758b4a18bc75fd
sha512
273e274074cf9c68e37294096a2b06e571adb48e01c7fd82e8dd7d5d698783f192b80cca355870d18ba610d8662533926df0cc9803420005e022ac350d6e672a
ripemd-160
e555df24a30cf8b242e83bec7f253b6e3377aab3
Diameter
41974058
Circumference
131865392.25415
Area
1.3837314056671E+15
Volume
3.8720548185262E+22
Surface area
5.5349256226685E+15
Circumference
131865392.25415
Perimeter
83948116
Area
440455386246841
Diagonal
29680141.045717
Surface area
2642732317481046
Volume
9.2438499643687E+21
Space diagonal
36350600.527921
Perimeter
62961087
Area
1.9072277686173E+14
Altitude
18175300.263961
Surface area
1.9072277686173E+14
Volume
1.0893981656794E+21
Height
9893380.3485725