81998944 (number)

81998944 is an even 8-digits composite number following 81998943 and preceding 81998945. In scientific notation, it is written as 8.1998944 × 10^7. The sum of its digits is 52. It has a total of 6 prime factors and 12 positive divisors. There are 40999456 positive integers (up to 81998944) that are relatively prime to 81998944.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1998944 × 10^7
Engineering notation 8.1998944 × 10^6

Prime Factorization of 81998944

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2562467

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 5124934
Product of the distinct prime numbers

The prime factorization of 81998944 is 2 × 2 × 2 × 2 × 2 × 2562467. Since it has a total of 6 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81998944)

Multiplication

n×y
n×2 163997888
n×3 245996832
n×4 327995776
n×5 409994720

Division

n÷y
n÷2 40999472
n÷3 27332981.333333
n÷3 20499736
n÷5 16399788.8

Exponentiation

ny
n2 6723826817115136
n3 5.5134669864232E+23
n4 4.5209847066557E+31
n5 3.7071597178591E+39

Nth Root

y√n
2√n 9055.3268301039
3√n 434.44628362071
4√n 95.159481031077
5√n 38.261470031282

Divisors of 81998944

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 -81998943
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 81998944 can be divided by 12 positive divisors. The sum of these divisors (counting 81998944) is 1, the average is 0.083333333333333.

Base conversion 81998944

Base System Value
2 Binary 100111000110011010001100000
3 Ternary 12201021222101221
4 Quaternary 10320303101200
5 Quinary 131442431234
6 Senary 12045304424
8 Octal 470632140
10 Decimal 81998944
12 Duodecimal 23565114
16 Hexadecimal 4e33460
20 Vigesimal 15c9h74
36 Base36 1ctisg

Cryptographic Hash Functions

md5 93d4f88bbbaefaf7cd5f5e11840fdb98
sha1 a8fea6513afe6105fba8094ff325ab09d95aca79
sha256 0393a47fa9e4d3fa79914f87d8bc8fa6ff5663c4e2b98bf01900b2b87db1647a
sha512 b180de7625c1b15c7985ccd723f6a7751f7b6ae3eed4de54733360c9b9b06e47368e03f8f37eb20959ed97cd2211af6f5aff38d84449d29d1f67f4c2c9961e65
ripemd-160 99d3ad06d97f3b903e4130f5ffca15acb6aab711

81998944 as geometric shapes

Circle

Radius = n
Diameter 163997888
Circumference 515214560.14504
Area 2.1123524932659E+16

Sphere

Radius = n
Volume 2.3094756507143E+24
Surface area 8.4494099730636E+16
Circumference 515214560.14504

Square

Length = n
Perimeter 327995776
Area 6723826817115136
Diagonal 115964018.70507

Cube

Length = n
Surface area 40342960902690816
Volume 5.5134669864232E+23
Space diagonal 142026337.175

Equilateral Triangle

Length = n
Perimeter 245996832
Area 2.9115024171344E+15
Altitude 71013168.587498

Triangular Pyramid

Length = n
Surface area 2.9115024171344E+15
Volume 6.49768315658E+22
Height 38654672.901691