81479938 (number)

81479938 is an even 8-digits composite number following 81479937 and preceding 81479939. In scientific notation, it is written as 8.1479938 × 10^7. The sum of its digits is 49. It has a total of 4 prime factors and 16 positive divisors. There are 38497360 positive integers (up to 81479938) that are relatively prime to 81479938.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred seventy-nine thousand nine hundred thirty-eight

Notation

Scientific notation 8.1479938 × 10^7
Engineering notation 8.1479938 × 10^6

Prime Factorization of 81479938

Prime Factorization 2 × 23 × 83 × 21341

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81479938
Product of the distinct prime numbers

The prime factorization of 81479938 is 2 × 23 × 83 × 21341. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 9, 6, 39, 55, 355, 6472, 8604, 15080, 92416, 44354, 991718, 1187909, 2410080, 82267234, 97912039, 285286143, 311426977, 8211871229, 9652669838

Basic calculations (n = 81479938)

Multiplication

n×y
n×2 162959876
n×3 244439814
n×4 325919752
n×5 407399690

Division

n÷y
n÷2 40739969
n÷3 27159979.333333
n÷3 20369984.5
n÷5 16295987.6

Exponentiation

ny
n2 6638980296483844
n3 5.4094370294073E+23
n4 4.4076059377101E+31
n5 3.5913145853305E+39

Nth Root

y√n
2√n 9026.6238428329
3√n 433.52774484995
4√n 95.008546156822
5√n 38.212912332791

Divisors of 81479938

1, 2, 23, 46, 83, 166, 1909, 3818, 21341, 42682, 490843, 981686, 1771303, 3542606, 40739969, 81479938

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 -81479937
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 81479938 can be divided by 16 positive divisors. The sum of these divisors (counting 81479938) is 1, the average is 0.0625.

Base conversion 81479938

Base System Value
2 Binary 100110110110100100100000010
3 Ternary 12200022121110111
4 Quaternary 10312310210002
5 Quinary 131324324223
6 Senary 12030221534
8 Octal 466644402
10 Decimal 81479938
12 Duodecimal 233548aa
16 Hexadecimal 4db4902
20 Vigesimal 1594jgi
36 Base36 1ciebm

Cryptographic Hash Functions

md5 10152f925a23a9661a26f7c75840e61e
sha1 6205788ed946840b2f7d8fc2ec09f0d8be685b65
sha256 399fb71c4550ea9955f975725eeaaf97b460bda4289272cac3076f9455e64446
sha512 4d03367ce2cbfce008574e58f0f16273958b33bc9bf00c95e7f2f891add34b95389335d8a99c98b45ed0c88451511f08966c1a593b98014fc00eeb5af00b58eb
ripemd-160 69c0f36d26b3cee4c5e46e50bb5840bef2a861b1

81479938 as geometric shapes

Circle

Radius = n
Diameter 162959876
Circumference 511953549.2715
Area 2.0856971726761E+16

Sphere

Radius = n
Volume 2.265899684219E+24
Surface area 8.3427886907044E+16
Circumference 511953549.2715

Square

Length = n
Perimeter 325919752
Area 6638980296483844
Diagonal 115230033.38092

Cube

Length = n
Surface area 39833881778903064
Volume 5.4094370294073E+23
Space diagonal 141127392.41356

Equilateral Triangle

Length = n
Perimeter 244439814
Area 2.8747627959897E+15
Altitude 70563696.206781

Triangular Pyramid

Length = n
Surface area 2.8747627959897E+15
Volume 6.3750826764925E+22
Height 38410011.126973