21031977 is an odd 8-digits composite number following 21031976
and preceding 21031978 . In scientific notation, it is written as 2.1031977 × 10^7.
The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors.
There are 14021316 positive integers (up to 21031977) that are relatively prime to 21031977.
21031977 has 4 divisors, whose sum is 28042640
The reverse of 21031977 is 77913012
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty-one million thirty-one thousand nine hundred seventy-seven
Scientific notation
2.1031977 × 10^7
Engineering notation
2.1031977 × 10^6
Prime Factorization
3 × 7010659
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21031977
Product of the distinct prime numbers
The prime factorization of 21031977 is 3 × 7010659.
Since it has a total of 2 prime factors.
1 , 6 , 21 , 10 , 22 , 430 , 7977 , 9025 , 4758 , 30600 , 262958 , 534429 , 695585 , 8906688 , 10460082 , 9815009 , 139092888 , 518996733 , 7139174379 , 5710740221
n×2
42063954
n×3
63095931
n×4
84127908
n×5
105159885
n÷2
10515988.5
n÷3
7010659
n÷3
5257994.25
n÷5
4206395.4
n2
442344056528529
n3
9.3033700229947E+21
n4
1.9566826434611E+29
n5
4.1152904353574E+36
2 √n
4586.0633445255
3 √n
276.03238172891
4 √n
67.720479506021
5 √n
29.145802631313
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
-21031976
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 21031977 can be divided by 4 positive divisors.
The sum of these divisors (counting 21031977) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000001110110000101001
3
Ternary
1110120112110010
4
Quaternary
1100032300221
5
Quinary
20341010402
6
Senary
2030442133
8
Octal
120166051
10
Decimal
21031977
12
Duodecimal
7063349
16
Hexadecimal
140ec29
20
Vigesimal
6b8jih
36
Base36
cisdl
md5
6b4b8ff94d2ad2bf875b3c0644f3bc4e
sha1
34e0902e5e5a4cf2507cf83248462fdd510b13ef
sha256
157897e858e5dad4ecd0a36b25c58a8f514938dad5d5688a2402eda697c87e36
sha512
1c1393259582a927f598b503acabb259186be3676a6f25d67294efc4266715e78686d5adeb7eacb6f1b62dca9794f302ad998cde9368f1d4b4ca81507ccf5442
ripemd-160
8c8783157482dd96d7185b30832a95b6b90e8db6
Diameter
42063954
Circumference
132147808.86734
Area
1.3896648383491E+15
Volume
3.8969865223824E+22
Surface area
5.5586593533965E+15
Circumference
132147808.86734
Perimeter
84127908
Area
442344056528529
Diagonal
29743707.116919
Surface area
2654064339171174
Volume
9.3033700229947E+21
Space diagonal
36428452.74762
Perimeter
63095931
Area
1.9154059508338E+14
Altitude
18214226.37381
Surface area
1.9154059508338E+14
Volume
1.0964126718579E+21
Height
9914569.038973