81291276 (number)

81291276 is an even 8-digits composite number following 81291275 and preceding 81291277. In scientific notation, it is written as 8.1291276 × 10^7. The sum of its digits is 36. It has a total of 6 prime factors and 36 positive divisors. There are 24630480 positive integers (up to 81291276) that are relatively prime to 81291276.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred ninety-one thousand two hundred seventy-six

Notation

Scientific notation 8.1291276 × 10^7
Engineering notation 8.1291276 × 10^6

Prime Factorization of 81291276

Prime Factorization 2 × 2 × 3 × 3 × 297 × 7603

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 13548546
Product of the distinct prime numbers

The prime factorization of 81291276 is 2 × 2 × 3 × 3 × 297 × 7603. Since it has a total of 6 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81291276)

Multiplication

n×y
n×2 162582552
n×3 243873828
n×4 325165104
n×5 406456380

Division

n÷y
n÷2 40645638
n÷3 27097092
n÷3 20322819
n÷5 16258255.2

Exponentiation

ny
n2 6608271553708176
n3 5.3719482675544E+23
n4 4.3669252927549E+31
n5 3.5499292924472E+39

Nth Root

y√n
2√n 9016.16747848
3√n 433.19288360867
4√n 94.953501665183
5√n 38.195199970604

Divisors of 81291276

36 divisors

τ Total Divisors 36
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81291275
Sum of the proper positive divisors of n
A Arithmetic Mean 0.027777777777778
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 36
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81291276 can be divided by 36 positive divisors. The sum of these divisors (counting 81291276) is 1, the average is 0.027777777777778.

Base conversion 81291276

Base System Value
2 Binary 100110110000110100000001100
3 Ternary 12122222000200000
4 Quaternary 10312012200030
5 Quinary 131302310101
6 Senary 12022204300
8 Octal 466064014
10 Decimal 81291276
12 Duodecimal 23283690
16 Hexadecimal 4d8680c
20 Vigesimal 158183g
36 Base36 1cecr0

Cryptographic Hash Functions

md5 9c7147a22e5d4274956b5de9fb00e46e
sha1 bb81e94ab15ab445b6963817d46479f21549e042
sha256 540db4d097636182fe2a38be514a231d964d955684053305857f8ee627b1079f
sha512 1952deef95cc24f7cbbc5658f2bf1db1a600ffc4dce7bd8534aac8bef6d5874bfc0b438e948d205656c0a218843f5252064d6017f3089cdfe00f8ed669b9fc5a
ripemd-160 971553e4126939e5f1f87bc1aaecf8636b8bb261

81291276 as geometric shapes

Circle

Radius = n
Diameter 162582552
Circumference 510768150.96508
Area 2.0760497366056E+16

Sphere

Radius = n
Volume 2.2501964283751E+24
Surface area 8.3041989464224E+16
Circumference 510768150.96508

Square

Length = n
Perimeter 325165104
Area 6608271553708176
Diagonal 114963225.02181

Cube

Length = n
Surface area 39649629322249056
Volume 5.3719482675544E+23
Space diagonal 140800620.2441

Equilateral Triangle

Length = n
Perimeter 243873828
Area 2.8614655203087E+15
Altitude 70400310.122052

Triangular Pyramid

Length = n
Surface area 2.8614655203087E+15
Volume 6.3309017469517E+22
Height 38321075.007271