21977 is an odd 5-digits prime number following 21976
and preceding 21978 . In scientific notation, it is written as 2.1977 × 10^4.
The sum of its digits is 26. It has a total of 1 prime factors and 2 positive divisors.
There are 21976 positive integers (up to 21977) that are relatively prime to 21977.
21977 has 2 divisors, whose sum is 21978
The reverse of 21977 is 77912
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 5
Sum of Digits 26
Digital Root 8
Name
twenty-one thousand nine hundred seventy-seven
Scientific notation
2.1977 × 10^4
Engineering notation
2.1977 × 10^3
Prime Factorization
21977
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21977
Product of the distinct prime numbers
The prime factorization of 21977 is 21977.
Since it has a total of 1 prime factors.
8 , 3 , 25 , 89 , 643 , 468 , 5256 , 2985 , 91999 , 39336 , 897676 , 829457 , 7796467 , 1941876 , 4112658 , 79370404 , 540867215 , 458654979 , 5626727249 , 8056495633
n×2
43954
n×3
65931
n×4
87908
n×5
109885
n÷2
10988.5
n÷3
7325.6666666667
n÷3
5494.25
n÷5
4395.4
n2
482988529
n3
10614638901833
n4
233277919145583841
n5
5.1267488290625E+21
2 √n
148.24641648283
3 √n
28.010625219216
4 √n
12.175648503584
5 √n
7.3857343285476
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21978
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10989
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
148.24978920727
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.999908999909
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21977 can be divided by 2 positive divisors.
The sum of these divisors (counting 21977) is 21978, the average is 10989.
Base
System
Value
2
Binary
101010111011001
3
Ternary
1010010222
4
Quaternary
11113121
5
Quinary
1200402
6
Senary
245425
8
Octal
52731
10
Decimal
21977
12
Duodecimal
10875
16
Hexadecimal
55d9
20
Vigesimal
2eih
36
Base36
gyh
md5
db2d1bc7f17a3a44b4f1cb9075f6899c
sha1
bb520b6c19391a8e47b10e0de6ed1546500c4e10
sha256
ea141186608c5ffec4edaddfe25d17d86936d79ab81d796d1ace20386b6763b6
sha512
a8e2a59b472f13e6b1308e7ccfc3cd380c5cab34ff9376c17a314113e631f26c49cafe88cec2d0a700eea8963f0ef0fcc5aae331c7baa07baff7e733504e005f
ripemd-160
693a8521213b6eeaf3f00cfad67b76c5d9d6456b
Diameter
43954
Circumference
138085.56349589
Area
1517353214.4745
Volume
44462495459343
Surface area
6069412857.8982
Circumference
138085.56349589
Perimeter
87908
Area
482988529
Diagonal
31080.171460274
Surface area
2897931174
Volume
10614638901833
Space diagonal
38065.280597941
Perimeter
65931
Area
209140167.92524
Altitude
19032.640298971
Surface area
209140167.92524
Volume
1250947191222.1
Height
10360.057153425