20856689 is an odd 8-digits composite number following 20856688
and preceding 20856690 . In scientific notation, it is written as 2.0856689 × 10^7.
The sum of its digits is 44. It has a total of 3 prime factors and 8 positive divisors.
There are 17807616 positive integers (up to 20856689) that are relatively prime to 20856689.
20856689 has 8 divisors, whose sum is 23928960
The reverse of 20856689 is 98665802
Previous prime number is 263
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 44
Digital Root 8
Name
twenty million eight hundred fifty-six thousand six hundred eighty-nine
Scientific notation
2.0856689 × 10^7
Engineering notation
2.0856689 × 10^6
Prime Factorization
7 × 263 × 11329
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20856689
Product of the distinct prime numbers
The prime factorization of 20856689 is 7 × 263 × 11329.
Since it has a total of 3 prime factors.
1 , 5 , 60 , 89 , 41 , 653 , 8303 , 262 , 76135 , 40300 , 344784 , 271234 , 447818 , 7578543 , 49212651 , 27278802 , 713200243 , 624875625 , 6835358668 , 4654811478
n×2
41713378
n×3
62570067
n×4
83426756
n×5
104283445
n÷2
10428344.5
n÷3
6952229.6666667
n÷3
5214172.25
n÷5
4171337.8
n2
435001476042721
n3
9.072690500364E+21
n4
1.8922628415935E+29
n5
3.9466337593371E+36
2 √n
4566.9124143123
3 √n
275.26339062332
4 √n
67.578934693529
5 √n
29.097057552229
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
-20856688
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 20856689 can be divided by 8 positive divisors.
The sum of these divisors (counting 20856689) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111100011111101110001
3
Ternary
1110020121222222
4
Quaternary
1033203331301
5
Quinary
20314403224
6
Senary
2023010425
8
Octal
117437561
10
Decimal
20856689
12
Duodecimal
6b99a15
16
Hexadecimal
13e3f71
20
Vigesimal
6a71e9
36
Base36
cf14h
md5
94934f6b982fd114ed691d9cf46705a6
sha1
708e24bbb93686642af15cce76238f2584f81660
sha256
57e26f94193675bef9e3cb910ece9a813a24608a41eb168a0f511fd312f920c6
sha512
a5024bfeb22626608489c37fc10253af00d05f63106a3cf678e247c5dc8e9ca8db7c2250392ed0d5b43cfc6f203ea656c4f47e99fead9c437f20f596b545d532
ripemd-160
6e3e1be3fde1f5175b01db86c37e03d91dfecf01
Diameter
41713378
Circumference
131046441.88121
Area
1.3665974414365E+15
Volume
3.8003597098983E+22
Surface area
5.4663897657461E+15
Circumference
131046441.88121
Perimeter
83426756
Area
435001476042721
Diagonal
29495812.449998
Surface area
2610008856256326
Volume
9.072690500364E+21
Space diagonal
36124845.025663
Perimeter
62570067
Area
1.8836116446836E+14
Altitude
18062422.512831
Surface area
1.8836116446836E+14
Volume
1.0692268294024E+21
Height
9831937.4833326