81397977 (number)

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.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred ninety-seven thousand nine hundred seventy-seven

Notation

Scientific notation 8.1397977 × 10^7
Engineering notation 8.1397977 × 10^6

Prime Factorization of 81397977

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.

Most popular turbo-numbers

Basic calculations (n = 81397977)

Multiplication

n×y
n×2 162795954
n×3 244193931
n×4 325591908
n×5 406989885

Division

n÷y
n÷2 40698988.5
n÷3 27132659
n÷3 20349494.25
n÷5 16279595.4

Exponentiation

ny
n2 6625630659692529
n3 5.3931293204815E+23
n4 4.3898981638658E+31
n5 3.5732882977469E+39

Nth Root

y√n
2√n 9022.0827418064
3√n 433.3823336437
4√n 94.984644768543
5√n 38.205221532995

Divisors of 81397977

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 conversion 81397977

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

Cryptographic Hash Functions

md5 52232920eb69c56480d760ecaa9ea3ca
sha1 581be11d4e468eed26a57f6c5c9284fbe68f5e78
sha256 b0a62088893a4f514296c4f56a993c6d90f505a507372fbb09a0264964cc15eb
sha512 22adb7d21175dd9caf67def4c167788d7faa232ea2d85081de8b47a90fb35d9e9aca1ffd63bc23c704e4fe5ac24110c31181f5dd0394198a156fce5dd13e0b24
ripemd-160 64244b54457ffb82e480e30445f1754d47a919dd

81397977 as geometric shapes

Circle

Radius = n
Diameter 162795954
Circumference 511438573.12054
Area 2.0815032605889E+16

Sphere

Radius = n
Volume 2.2590687270779E+24
Surface area 8.3260130423557E+16
Circumference 511438573.12054

Square

Length = n
Perimeter 325591908
Area 6625630659692529
Diagonal 115114123.02313

Cube

Length = n
Surface area 39753783958155174
Volume 5.3931293204815E+23
Space diagonal 140985431.79732

Equilateral Triangle

Length = n
Perimeter 244193931
Area 2.8689822336934E+15
Altitude 70492715.898661

Triangular Pyramid

Length = n
Surface area 2.8689822336934E+15
Volume 6.3558638572141E+22
Height 38371374.341044