81497871 (number)

81497871 is an odd 8-digits composite number following 81497870 and preceding 81497872. In scientific notation, it is written as 8.1497871 × 10^7. The sum of its digits is 45. It has a total of 5 prime factors and 32 positive divisors. There are 42638400 positive integers (up to 81497871) that are relatively prime to 81497871.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred ninety-seven thousand eight hundred seventy-one

Notation

Scientific notation 8.1497871 × 10^7
Engineering notation 8.1497871 × 10^6

Prime Factorization of 81497871

Prime Factorization 9 × 7 × 13 × 151 × 659

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81497871
Product of the distinct prime numbers

The prime factorization of 81497871 is 9 × 7 × 13 × 151 × 659. Since it has a total of 5 prime factors.

Most popular turbo-numbers

8, 5, 1, 20, 786, 418, 5583, 3099, 91093, 38058, 34603, 988821, 1555188, 4209075, 53710570, 73882830, 908166835, 366031089, 2372253604, 1383106146

Basic calculations (n = 81497871)

Multiplication

n×y
n×2 162995742
n×3 244493613
n×4 325991484
n×5 407489355

Division

n÷y
n÷2 40748935.5
n÷3 27165957
n÷3 20374467.75
n÷5 16299574.2

Exponentiation

ny
n2 6641902977532641
n3 5.4130095205747E+23
n4 4.4114875162957E+31
n5 3.5952684052118E+39

Nth Root

y√n
2√n 9027.6171274595
3√n 433.55954770002
4√n 95.013773356601
5√n 38.214594248249

Divisors of 81497871

1, 7, 9, 13, 63, 91, 117, 151, 659, 819, 1057, 1359, 1963, 4613, 5931, 8567, 9513, 13741, 17667, 41517, 59969, 77103, 99509, 123669, 539721, 696563, 895581, 1293617, 6269067, 9055319, 11642553, 81497871

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81497870
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81497871 can be divided by 32 positive divisors. The sum of these divisors (counting 81497871) is 1, the average is 0.03125.

Base conversion 81497871

Base System Value
2 Binary 100110110111000111100001111
3 Ternary 12200100112001200
4 Quaternary 10312320330033
5 Quinary 131330412441
6 Senary 12030440543
8 Octal 466707417
10 Decimal 81497871
12 Duodecimal 23363153
16 Hexadecimal 4db8f0f
20 Vigesimal 15974db
36 Base36 1cis5r

Cryptographic Hash Functions

md5 785ffeb337b716c3228664c1719c05d2
sha1 3eb6c1d19a8434782d7973d9678b30f298331145
sha256 35c7edecd1783176d9dd7c74322b9b21042e048b458be00dc7a22b1f59d8e0dd
sha512 0dc82246b1146670a1096b2a1c1510a22260a5ad565332242878a8d44572a9d1b1c2ecc2a6985d475493965a3a83c937150ddb02679966cfbef1b1f98ef593c1
ripemd-160 3b9198fc6f75d7e4895680268503e479b315b78d

81497871 as geometric shapes

Circle

Radius = n
Diameter 162995742
Circumference 512066225.63362
Area 2.0866153600073E+16

Sphere

Radius = n
Volume 2.2673961258199E+24
Surface area 8.3464614400291E+16
Circumference 512066225.63362

Square

Length = n
Perimeter 325991484
Area 6641902977532641
Diagonal 115255394.47273

Cube

Length = n
Surface area 39851417865195846
Volume 5.4130095205747E+23
Space diagonal 141158453.28069

Equilateral Triangle

Length = n
Perimeter 244493613
Area 2.8760283540074E+15
Altitude 70579226.640347

Triangular Pyramid

Length = n
Surface area 2.8760283540074E+15
Volume 6.3792928977095E+22
Height 38418464.824244