81271490 (number)

81271490 is an even 8-digits composite number following 81271489 and preceding 81271491. In scientific notation, it is written as 8.1271490 × 10^7. The sum of its digits is 32. It has a total of 4 prime factors and 16 positive divisors. There are 32209920 positive integers (up to 81271490) that are relatively prime to 81271490.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1271490 × 10^7
Engineering notation 8.1271490 × 10^6

Prime Factorization of 81271490

Prime Factorization 2 × 5 × 109 × 74561

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81271490
Product of the distinct prime numbers

The prime factorization of 81271490 is 2 × 5 × 109 × 74561. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 7, 74, 85, 202, 886, 721, 1149, 84990, 73070, 875037, 242898, 3100925, 6127599, 72332894, 4836683, 361307738, 802738307, 9932915491, 3621592124

Basic calculations (n = 81271490)

Multiplication

n×y
n×2 162542980
n×3 243814470
n×4 325085960
n×5 406357450

Division

n÷y
n÷2 40635745
n÷3 27090496.666667
n÷3 20317872.5
n÷5 16254298

Exponentiation

ny
n2 6605055086820100
n3 5.3680266843795E+23
n4 4.3626752699928E+31
n5 3.5456111957847E+39

Nth Root

y√n
2√n 9015.07016057
3√n 433.15773490101
4√n 94.947723303774
5√n 38.193340475092

Divisors of 81271490

1, 2, 5, 10, 109, 218, 545, 1090, 74561, 149122, 372805, 745610, 8127149, 16254298, 40635745, 81271490

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 -81271489
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 81271490 can be divided by 16 positive divisors. The sum of these divisors (counting 81271490) is 1, the average is 0.0625.

Base conversion 81271490

Base System Value
2 Binary 100110110000001101011000010
3 Ternary 12122221000112012
4 Quaternary 10312001223002
5 Quinary 131301141430
6 Senary 12021532522
8 Octal 466015302
10 Decimal 81271490
12 Duodecimal 23274142
16 Hexadecimal 4d81ac2
20 Vigesimal 157iiea
36 Base36 1cdxhe

Cryptographic Hash Functions

md5 dfb3d3ea257919d378c484e492a5ff2c
sha1 b4f8024d97504e3161d9e66964882210b48fa925
sha256 a32ce0081ee3bd66a63f19a3d3549a6eb7c49230cd792a83d56dc53a63a83cd9
sha512 60cf2de6d7699c2e5b17e8d61aa0c3d57ede119cdb99fb0b2840dd31a722f571520bc818aa9b61dc0d8b556aa87d0416b0bcd02d213d57e46aa1b4450fae51d2
ripemd-160 81103cdb14e1553ea0abc01e732b0a9f9b08e2f9

81271490 as geometric shapes

Circle

Radius = n
Diameter 162542980
Circumference 510643831.86059
Area 2.075039253731E+16

Sphere

Radius = n
Volume 2.2485537594561E+24
Surface area 8.300157014924E+16
Circumference 510643831.86059

Square

Length = n
Perimeter 325085960
Area 6605055086820100
Diagonal 114935243.39227

Cube

Length = n
Surface area 39630330520920600
Volume 5.3680266843795E+23
Space diagonal 140766349.88683

Equilateral Triangle

Length = n
Perimeter 243814470
Area 2.8600727492909E+15
Altitude 70383174.943413

Triangular Pyramid

Length = n
Surface area 2.8600727492909E+15
Volume 6.3262801168585E+22
Height 38311747.797423