20787621 is an odd 8-digits composite number following 20787620
and preceding 20787622 . In scientific notation, it is written as 2.0787621 × 10^7.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 13651440 positive integers (up to 20787621) that are relatively prime to 20787621.
20787621 has 8 divisors, whose sum is 28130784
The reverse of 20787621 is 12678702
Previous prime number is 67
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty million seven hundred eighty-seven thousand six hundred twenty-one
Scientific notation
2.0787621 × 10^7
Engineering notation
2.0787621 × 10^6
Prime Factorization
3 × 67 × 103421
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20787621
Product of the distinct prime numbers
The prime factorization of 20787621 is 3 × 67 × 103421.
Since it has a total of 3 prime factors.
10 , 6 , 32 , 43 , 317 , 386 , 1019 , 170 , 20271 , 57062 , 296682 , 48137 , 7688556 , 808273 , 92311377 , 41877415 , 398977719 , 220880971 , 5494251591 , 5981996880
n×2
41575242
n×3
62362863
n×4
83150484
n×5
103938105
n÷2
10393810.5
n÷3
6929207
n÷3
5196905.25
n÷5
4157524.2
n2
432125186839641
n3
8.9828546085766E+21
n4
1.8673217710119E+29
n5
3.8817177260845E+36
2 √n
4559.3443607607
3 √n
274.95920496782
4 √n
67.52291730043
5 √n
29.077760693267
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
-20787620
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 20787621 can be divided by 8 positive divisors.
The sum of these divisors (counting 20787621) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111010011000110100101
3
Ternary
1110010010020220
4
Quaternary
1033103012211
5
Quinary
20310200441
6
Senary
2021314553
8
Octal
117230645
10
Decimal
20787621
12
Duodecimal
6b65a59
16
Hexadecimal
13d31a5
20
Vigesimal
69i911
36
Base36
cdjtx
md5
513b5a7a64e0a285c3231e371c31be30
sha1
2917f24d7d818e9b98dbb6015e37b1241a7d2adc
sha256
1fc10d2ab9a9a627500ab9ebf1400b48fd73b3490d93eefe5c1393142658ba6e
sha512
d035dc6a5e7fad2777272749542ed96a6dd628d076340d455ae8d479a41db029fafc9576e7654227040a4d07d128d8f5e8d6c419caf18fd971f6bb6f79137206
ripemd-160
b14a78be46c14e29be94e93968a989b9be9aeb1a
Diameter
41575242
Circumference
130612474.83842
Area
1.3575613124065E+15
Volume
3.7627293395426E+22
Surface area
5.4302452496261E+15
Circumference
130612474.83842
Perimeter
83150484
Area
432125186839641
Diagonal
29398135.547672
Surface area
2592751121037846
Volume
8.9828546085766E+21
Space diagonal
36005215.740486
Perimeter
62362863
Area
1.8711569470911E+14
Altitude
18002607.870243
Surface area
1.8711569470911E+14
Volume
1.0586395680229E+21
Height
9799378.5158906