81440994 (number)

81440994 is an even 8-digits composite number following 81440993 and preceding 81440995. In scientific notation, it is written as 8.1440994 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors. There are 26980128 positive integers (up to 81440994) that are relatively prime to 81440994.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty thousand nine hundred ninety-four

Notation

Scientific notation 8.1440994 × 10^7
Engineering notation 8.1440994 × 10^6

Prime Factorization of 81440994

Prime Factorization 2 × 3 × 163 × 83273

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81440994
Product of the distinct prime numbers

The prime factorization of 81440994 is 2 × 3 × 163 × 83273. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 2, 86, 22, 504, 844, 2082, 5609, 98175, 38183, 564961, 794548, 1594324, 6730439, 54246826, 22166988, 680515053, 750540068, 9799768718, 8839442552

Basic calculations (n = 81440994)

Multiplication

n×y
n×2 162881988
n×3 244322982
n×4 325763976
n×5 407204970

Division

n÷y
n÷2 40720497
n÷3 27146998
n÷3 20360248.5
n÷5 16288198.8

Exponentiation

ny
n2 6632635503708036
n3 5.4016842826167E+23
n4 4.3991853725048E+31
n5 3.5827402952705E+39

Nth Root

y√n
2√n 9024.466410819
3√n 433.45866447073
4√n 94.997191594378
5√n 38.209258799693

Divisors of 81440994

1, 2, 3, 6, 163, 326, 489, 978, 83273, 166546, 249819, 499638, 13573499, 27146998, 40720497, 81440994

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 -81440993
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 81440994 can be divided by 16 positive divisors. The sum of these divisors (counting 81440994) is 1, the average is 0.0625.

Base conversion 81440994

Base System Value
2 Binary 100110110101011000011100010
3 Ternary 12200020122001010
4 Quaternary 10312223003202
5 Quinary 131322102434
6 Senary 12025321350
8 Octal 466530342
10 Decimal 81440994
12 Duodecimal 23336256
16 Hexadecimal 4dab0e2
20 Vigesimal 159029e
36 Base36 1chk9u

Cryptographic Hash Functions

md5 79910fdf13d6618c2d04637687edc192
sha1 23fcaca48731925192b1d26bdf7cb90502773ada
sha256 d20f709859549ffd693d45280d3b0c156719ac5547156ada3ec737459073f44d
sha512 db84377ac7e02194cc54e2b5d25145689449bf8428c7688438bef87b7928620df4784676d7193997f9aa3a4872b4350a7aca8a534f332c4fb4edca4098dffc99
ripemd-160 4e22c4e52555b9442c96477ac8c3805619315764

81440994 as geometric shapes

Circle

Radius = n
Diameter 162881988
Circumference 511708856.9029
Area 2.0837038972388E+16

Sphere

Radius = n
Volume 2.2626522212374E+24
Surface area 8.3348155889552E+16
Circumference 511708856.9029

Square

Length = n
Perimeter 325763976
Area 6632635503708036
Diagonal 115174958.24795

Cube

Length = n
Surface area 39795813022248216
Volume 5.4016842826167E+23
Space diagonal 141059939.42691

Equilateral Triangle

Length = n
Perimeter 244322982
Area 2.8720154201269E+15
Altitude 70529969.713456

Triangular Pyramid

Length = n
Surface area 2.8720154201269E+15
Volume 6.3659459767785E+22
Height 38391652.749315