81397977 is an odd 8-digits composite number following 81397976
and preceding 81397978 . In scientific notation, it is written as 8.1397977 × 10^7.
The sum of its digits is 51. It has a total of 3 prime factors and 8 positive divisors.
There are 54167808 positive integers (up to 81397977) that are relatively prime to 81397977.
81397977 has 8 divisors, whose sum is 108725664
The reverse of 81397977 is 77979318
Previous prime number is 563
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 51
Digital Root 6
Name
eighty-one million three hundred ninety-seven thousand nine hundred seventy-seven
Scientific notation
8.1397977 × 10^7
Engineering notation
8.1397977 × 10^6
Prime Factorization
3 × 563 × 48193
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81397977
Product of the distinct prime numbers
The prime factorization of 81397977 is 3 × 563 × 48193.
Since it has a total of 3 prime factors.
5 , 6 , 79 , 74 , 485 , 2 , 7716 , 3263 , 53383 , 68146 , 470929 , 696991 , 9997082 , 9837223 , 3939219 , 59285140 , 5928776 , 476948618 , 3818938700 , 9404662915
n×2
162795954
n×3
244193931
n×4
325591908
n×5
406989885
n÷2
40698988.5
n÷3
27132659
n÷3
20349494.25
n÷5
16279595.4
n2
6625630659692529
n3
5.3931293204815E+23
n4
4.3898981638658E+31
n5
3.5732882977469E+39
2 √n
9022.0827418064
3 √n
433.3823336437
4 √n
94.984644768543
5 √n
38.205221532995
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
-81397976
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 81397977 can be divided by 8 positive divisors.
The sum of these divisors (counting 81397977) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110100000100011011001
3
Ternary
12200011110000220
4
Quaternary
10312200203121
5
Quinary
131314213402
6
Senary
12024350253
8
Octal
466404331
10
Decimal
81397977
12
Duodecimal
23315389
16
Hexadecimal
4da08d9
20
Vigesimal
158eeih
36
Base36
1cgn2x
md5
52232920eb69c56480d760ecaa9ea3ca
sha1
581be11d4e468eed26a57f6c5c9284fbe68f5e78
sha256
b0a62088893a4f514296c4f56a993c6d90f505a507372fbb09a0264964cc15eb
sha512
22adb7d21175dd9caf67def4c167788d7faa232ea2d85081de8b47a90fb35d9e9aca1ffd63bc23c704e4fe5ac24110c31181f5dd0394198a156fce5dd13e0b24
ripemd-160
64244b54457ffb82e480e30445f1754d47a919dd
Diameter
162795954
Circumference
511438573.12054
Area
2.0815032605889E+16
Volume
2.2590687270779E+24
Surface area
8.3260130423557E+16
Circumference
511438573.12054
Perimeter
325591908
Area
6625630659692529
Diagonal
115114123.02313
Surface area
39753783958155174
Volume
5.3931293204815E+23
Space diagonal
140985431.79732
Perimeter
244193931
Area
2.8689822336934E+15
Altitude
70492715.898661
Surface area
2.8689822336934E+15
Volume
6.3558638572141E+22
Height
38371374.341044