20137891 is an odd 8-digits composite number following 20137890
and preceding 20137892 . In scientific notation, it is written as 2.0137891 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 19077984 positive integers (up to 20137891) that are relatively prime to 20137891.
20137891 has 4 divisors, whose sum is 21197800
The reverse of 20137891 is 19873102
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty million one hundred thirty-seven thousand eight hundred ninety-one
Scientific notation
2.0137891 × 10^7
Engineering notation
2.0137891 × 10^6
Prime Factorization
19 × 1059889
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20137891
Product of the distinct prime numbers
The prime factorization of 20137891 is 19 × 1059889.
Since it has a total of 2 prime factors.
4 , 1 , 3 , 28 , 696 , 149 , 8381 , 7253 , 99757 , 23397 , 506139 , 628383 , 1840535 , 7831805 , 6469433 , 20617245 , 503822525 , 995742180 , 4243700127 , 7233173961
n×2
40275782
n×3
60413673
n×4
80551564
n×5
100689455
n÷2
10068945.5
n÷3
6712630.3333333
n÷3
5034472.75
n÷5
4027578.2
n2
405534653927881
n3
8.1666126575224E+21
n4
1.6445835553641E+29
n5
3.3118444378314E+36
2 √n
4487.5261559126
3 √n
272.06415639888
4 √n
66.989000260585
5 √n
28.893675910847
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
-20137890
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 20137891 can be divided by 4 positive divisors.
The sum of these divisors (counting 20137891) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100110100011110100011
3
Ternary
1101220002222211
4
Quaternary
1030310132203
5
Quinary
20123403031
6
Senary
1555342551
8
Octal
114643643
10
Decimal
20137891
12
Duodecimal
68b1a57
16
Hexadecimal
13347a3
20
Vigesimal
65h4eb
36
Base36
bzmhv
md5
37781f57b1e282ad0934ca0080cfc18a
sha1
f484d9c9887be05a56c49ef0c3f15383e4dd724c
sha256
20877f49378ff38a8727e1f6d3b6fd80bb797b123899e51ef4dd4432f4701e22
sha512
7c0ec00eaf9151c2e70309a0a2375365d6c92f75f9ac09a2ac7c04f85c8741268953987903363ed39c7ef680568bfd539f97ce21de459dd275900b696aebea02
ripemd-160
15acc762cd03e208229885eb0fded8de63c3079e
Diameter
40275782
Circumference
126530100.84878
Area
1.2740246895559E+15
Volume
3.4208227106114E+22
Surface area
5.0960987582236E+15
Circumference
126530100.84878
Perimeter
80551564
Area
405534653927881
Diagonal
28479278.569791
Surface area
2433207923567286
Volume
8.1666126575224E+21
Space diagonal
34879850.369284
Perimeter
60413673
Area
1.7560165620824E+14
Altitude
17439925.184642
Surface area
1.7560165620824E+14
Volume
9.6244453157633E+20
Height
9493092.856597