81405908 (number)

81405908 is an even 8-digits composite number following 81405907 and preceding 81405909. In scientific notation, it is written as 8.1405908 × 10^7. The sum of its digits is 35. It has a total of 4 prime factors and 12 positive divisors. There are 40682520 positive integers (up to 81405908) that are relatively prime to 81405908.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred five thousand nine hundred eight

Notation

Scientific notation 8.1405908 × 10^7
Engineering notation 8.1405908 × 10^6

Prime Factorization of 81405908

Prime Factorization 2 × 2 × 2711 × 7507

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40702954
Product of the distinct prime numbers

The prime factorization of 81405908 is 2 × 2 × 2711 × 7507. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 5, 51, 98, 871, 478, 9067, 7740, 11721, 94874, 184263, 116609, 1425326, 1506524, 10551775, 57616751, 882427496, 31739828, 539748916, 1190700862

Basic calculations (n = 81405908)

Multiplication

n×y
n×2 162811816
n×3 244217724
n×4 325623632
n×5 407029540

Division

n÷y
n÷2 40702954
n÷3 27135302.666667
n÷3 20351477
n÷5 16281181.6

Exponentiation

ny
n2 6626921857304464
n3 5.3947059103892E+23
n4 4.391609330282E+31
n5 3.5750294511288E+39

Nth Root

y√n
2√n 9022.5222637575
3√n 433.39640870137
4√n 94.986958387757
5√n 38.205966008017

Divisors of 81405908

1, 2, 4, 2711, 5422, 7507, 10844, 15014, 30028, 20351477, 40702954, 81405908

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81405907
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81405908 can be divided by 12 positive divisors. The sum of these divisors (counting 81405908) is 1, the average is 0.083333333333333.

Base conversion 81405908

Base System Value
2 Binary 100110110100010011111010100
3 Ternary 12200011211220122
4 Quaternary 10312202133110
5 Quinary 131314442113
6 Senary 12024451112
8 Octal 466423724
10 Decimal 81405908
12 Duodecimal 23319a98
16 Hexadecimal 4da27d4
20 Vigesimal 158fef8
36 Base36 1cgt78

Cryptographic Hash Functions

md5 496535073bc35cbe41a6502854dac801
sha1 cc6c0b4b9ff06a99cb0f3276e64c861d47b2f9b9
sha256 c539cd514b105140fbfeb28a1dc767e8aef7813e9b9e341c32718da9856e7c35
sha512 95dcc0b470a95bb8802130f4a21b1b631f64443c984a6b1ff703fb5de87f227d0f88615c97c48c16e62e5a23a5523e73a4e9def728bf234c24cd0ada74f1b3de
ripemd-160 9f597706dff60c5cb75a5949fd188d120dea9ae4

81405908 as geometric shapes

Circle

Radius = n
Diameter 162811816
Circumference 511488405.06321
Area 2.0819089022821E+16

Sphere

Radius = n
Volume 2.2597291275141E+24
Surface area 8.3276356091285E+16
Circumference 511488405.06321

Square

Length = n
Perimeter 325623632
Area 6626921857304464
Diagonal 115125339.1509

Cube

Length = n
Surface area 39761531143826784
Volume 5.3947059103892E+23
Space diagonal 140999168.69228

Equilateral Triangle

Length = n
Perimeter 244217724
Area 2.86954133866E+15
Altitude 70499584.346139

Triangular Pyramid

Length = n
Surface area 2.86954133866E+15
Volume 6.3577218862389E+22
Height 38375113.050299