2021891 is an odd 7-digits prime number following 2021890
and preceding 2021892 . In scientific notation, it is written as 2.021891 × 10^6.
The sum of its digits is 23. It has a total of 1 prime factors and 2 positive divisors.
There are 2021890 positive integers (up to 2021891) that are relatively prime to 2021891.
2021891 has 2 divisors, whose sum is 2021892
The reverse of 2021891 is 1981202
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 7
Sum of Digits 23
Digital Root 5
Name
two million twenty-one thousand eight hundred ninety-one
Scientific notation
2.021891 × 10^6
Engineering notation
2.021891 × 10^6
Prime Factorization
2021891
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
2021891
Product of the distinct prime numbers
The prime factorization of 2021891 is 2021891.
Since it has a total of 1 prime factors.
3 , 9 , 89 , 11 , 830 , 854 , 7393 , 277 , 74530 , 71986 , 117567 , 158553 , 7551698 , 4838660 , 96532418 , 68348379 , 256087946 , 831043871 , 3288345403 , 8753949205
n×2
4043782
n×3
6065673
n×4
8087564
n×5
10109455
n÷2
1010945.5
n÷3
673963.66666667
n÷3
505472.75
n÷5
404378.2
n2
4088043215881
n3
8265577785800850971
n4
1.6712097334911E+25
n5
3.379003919258E+31
2 √n
1421.9321362147
3 √n
126.4501201587
4 √n
37.708515433714
5 √n
18.245322649785
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
2021892
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
1010946
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1421.9324878488
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999990108275
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 2021891 can be divided by 2 positive divisors.
The sum of these divisors (counting 2021891) is 2021892, the average is 1010946.
Base
System
Value
2
Binary
111101101101000000011
3
Ternary
10210201111212
4
Quaternary
13231220003
5
Quinary
1004200031
6
Senary
111200335
8
Octal
7555003
10
Decimal
2021891
12
Duodecimal
8160ab
16
Hexadecimal
1eda03
20
Vigesimal
cceeb
36
Base36
17c3n
md5
0d64ca1579d6ddd24d7c5423ccd701ac
sha1
9a91913e2050be7e62554040544fff4c8d5418ef
sha256
d8b9e2813b19d8b7653c3fc0ca0d43192817099a8a40d120b1931e083b5e9d75
sha512
340f4e06e262d2c8ce7c582666ac4a3a24cd6f23be6255e3a6760a85b04d42ad33da453113729f26f39caa69df9f71fab0a254329f0d16b2c23f468a18b9049f
ripemd-160
b58542b8829a4cb09a3e93b0fae44cee8b1218fb
Diameter
4043782
Circumference
12703915.823919
Area
12842966534569
Volume
3.4622771266063E+19
Surface area
51371866138277
Circumference
12703915.823919
Perimeter
8087564
Area
4088043215881
Diagonal
2859385.6738401
Surface area
24528259295286
Volume
8265577785800850971
Space diagonal
3502017.9393662
Perimeter
6065673
Area
1770174638360.8
Altitude
1751008.9696831
Surface area
1770174638360.8
Volume
9.7410768379411E+17
Height
953128.5579467