81271421 (number)

81271421 is an odd 8-digits composite number following 81271420 and preceding 81271422. In scientific notation, it is written as 8.1271421 × 10^7. The sum of its digits is 26. It has a total of 4 prime factors and 16 positive divisors. There are 62952000 positive integers (up to 81271421) that are relatively prime to 81271421.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred seventy-one thousand four hundred twenty-one

Notation

Scientific notation 8.1271421 × 10^7
Engineering notation 8.1271421 × 10^6

Prime Factorization of 81271421

Prime Factorization 7 × 11 × 173 × 6101

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81271421
Product of the distinct prime numbers

The prime factorization of 81271421 is 7 × 11 × 173 × 6101. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 8, 70, 58, 40, 378, 5307, 3901, 37997, 61886, 160986, 981043, 284718, 3077822, 63040371, 94955526, 209781418, 633797745, 7207311824, 4170641332

Basic calculations (n = 81271421)

Multiplication

n×y
n×2 162542842
n×3 243814263
n×4 325085684
n×5 406357105

Division

n÷y
n÷2 40635710.5
n÷3 27090473.666667
n÷3 20317855.25
n÷5 16254284.2

Exponentiation

ny
n2 6605043871359241
n3 5.3680130119271E+23
n4 4.362660454258E+31
n5 3.5455961445806E+39

Nth Root

y√n
2√n 9015.0663336439
3√n 433.15761231644
4√n 94.947703150966
5√n 38.193333989813

Divisors of 81271421

1, 7, 11, 77, 173, 1211, 1903, 6101, 13321, 42707, 67111, 469777, 1055473, 7388311, 11610203, 81271421

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81271420
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81271421 can be divided by 16 positive divisors. The sum of these divisors (counting 81271421) is 1, the average is 0.0625.

Base conversion 81271421

Base System Value
2 Binary 100110110000001101001111101
3 Ternary 12122221000102122
4 Quaternary 10312001221331
5 Quinary 131301141141
6 Senary 12021532325
8 Octal 466015175
10 Decimal 81271421
12 Duodecimal 232740a5
16 Hexadecimal 4d81a7d
20 Vigesimal 157iib1
36 Base36 1cdxfh

Cryptographic Hash Functions

md5 2ed001e7e3e4ecc7ab38ee29c731ff03
sha1 a08705868b1b9758480d30c51e4d1bb479c164cd
sha256 88c9a1cd574f7ee52a219b379c854eeac81b0ef840806f1f80bff8ee7ff10218
sha512 6f9594fb69e93625957d88eccdc46628deafb8ca9ab9437247cf6fb14b8e93d3b6379fd0933e0288ce3eedb12b892e875de528543ef02f55eb546cc8aa7596aa
ripemd-160 3507fb221974fa82cb12e85744ab8af6b8f93905

81271421 as geometric shapes

Circle

Radius = n
Diameter 162542842
Circumference 510643398.32081
Area 2.07503573029E+16

Sphere

Radius = n
Volume 2.2485480323526E+24
Surface area 8.3001429211602E+16
Circumference 510643398.32081

Square

Length = n
Perimeter 325085684
Area 6605043871359241
Diagonal 114935145.81153

Cube

Length = n
Surface area 39630263228155446
Volume 5.3680130119271E+23
Space diagonal 140766230.37532

Equilateral Triangle

Length = n
Perimeter 243814263
Area 2.8600678928539E+15
Altitude 70383115.18766

Triangular Pyramid

Length = n
Surface area 2.8600678928539E+15
Volume 6.3262640037188E+22
Height 38311715.270511