81016988 (number)

81016988 is an even 8-digits composite number following 81016987 and preceding 81016989. In scientific notation, it is written as 8.1016988 × 10^7. The sum of its digits is 41. It has a total of 6 prime factors and 48 positive divisors. There are 34582464 positive integers (up to 81016988) that are relatively prime to 81016988.

Interesting facts

Basic properties

Name

Name eighty-one million sixteen thousand nine hundred eighty-eight

Notation

Scientific notation 8.1016988 × 10^7
Engineering notation 8.1016988 × 10^6

Prime Factorization of 81016988

Prime Factorization 2 × 2 × 13 × 19 × 43 × 1907

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 40508494
Product of the distinct prime numbers

The prime factorization of 81016988 is 2 × 2 × 13 × 19 × 43 × 1907. Since it has a total of 6 prime factors.

Most popular turbo-numbers

9, 10, 91, 63, 113, 405, 2449, 1509, 23141, 55682, 554750, 891075, 1972905, 8619069, 56270726, 90132134, 349038241, 524230673, 7550484374, 9725315417

Basic calculations (n = 81016988)

Multiplication

n×y
n×2 162033976
n×3 243050964
n×4 324067952
n×5 405084940

Division

n÷y
n÷2 40508494
n÷3 27005662.666667
n÷3 20254247
n÷5 16203397.6

Exponentiation

ny
n2 6563752344592144
n3 5.3177544493679E+23
n4 4.3082844841139E+31
n5 3.4904423235004E+39

Nth Root

y√n
2√n 9000.9437282987
3√n 432.70511704661
4√n 94.87330355953
5√n 38.169389935721

Divisors of 81016988

1, 2, 4, 13, 19, 26, 38, 43, 52, 76, 86, 172, 247, 494, 559, 817, 988, 1118, 1634, 1907, 2236, 3268, 3814, 7628, 10621, 21242, 24791, 36233, 42484, 49582, 72466, 82001, 99164, 144932, 164002, 328004, 471029, 942058, 1066013, 1558019, 1884116, 2132026, 3116038, 4264052, 6232076, 20254247, 40508494, 81016988

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81016987
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81016988 can be divided by 48 positive divisors. The sum of these divisors (counting 81016988) is 1, the average is 0.020833333333333.

Base conversion 81016988

Base System Value
2 Binary 100110101000011100010011100
3 Ternary 12122110002102012
4 Quaternary 10311003202130
5 Quinary 131220020423
6 Senary 12012250352
8 Octal 465034234
10 Decimal 81016988
12 Duodecimal 231709b8
16 Hexadecimal 4d4389c
20 Vigesimal 1567298
36 Base36 1c8h3w

Cryptographic Hash Functions

md5 8f0af8d6cefc45cc6ba58e9e029902e2
sha1 2a0bb23d5f7cdcd8b891e34e608358269861d088
sha256 6b2ed30501eaf4bcb0bf84e8c46ec145ba8ed5ca78957436333d2efd4e1b9c7f
sha512 ddb1f8ddc48a3b6710a4114e88f5065b32f0c1e04b469bc2f6cbf45c6abece99f44a7dda57ee6e70d5ee9db59075c4c817b41c614e3e710c43c385c547edf3b9
ripemd-160 2eada66720bd9742b4c6f9df9541a9632343acf5

81016988 as geometric shapes

Circle

Radius = n
Diameter 162033976
Circumference 509044748.63354
Area 2.0620636145753E+16

Sphere

Radius = n
Volume 2.2274957748972E+24
Surface area 8.2482544583014E+16
Circumference 509044748.63354

Square

Length = n
Perimeter 324067952
Area 6563752344592144
Diagonal 114575323.21222

Cube

Length = n
Surface area 39382514067552864
Volume 5.3177544493679E+23
Space diagonal 140325539.4922

Equilateral Triangle

Length = n
Perimeter 243050964
Area 2.8421881372832E+15
Altitude 70162769.746099

Triangular Pyramid

Length = n
Surface area 2.8421881372832E+15
Volume 6.2670337197217E+22
Height 38191774.404073