81879938 (number)

81879938 is an even 8-digits composite number following 81879937 and preceding 81879939. In scientific notation, it is written as 8.1879938 × 10^7. The sum of its digits is 53. It has a total of 3 prime factors and 8 positive divisors. There are 35091396 positive integers (up to 81879938) that are relatively prime to 81879938.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1879938 × 10^7
Engineering notation 8.1879938 × 10^6

Prime Factorization of 81879938

Prime Factorization 2 × 7 × 5848567

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81879938
Product of the distinct prime numbers

The prime factorization of 81879938 is 2 × 7 × 5848567. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81879938)

Multiplication

n×y
n×2 163759876
n×3 245639814
n×4 327519752
n×5 409399690

Division

n÷y
n÷2 40939969
n÷3 27293312.666667
n÷3 20469984.5
n÷5 16375987.6

Exponentiation

ny
n2 6704324246883844
n3 5.4894965366675E+23
n4 4.4947963607355E+31
n5 3.6803364733965E+39

Nth Root

y√n
2√n 9048.7533948053
3√n 434.23600958605
4√n 95.124935715118
5√n 38.250357717116

Divisors of 81879938

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81879937
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81879938 can be divided by 8 positive divisors. The sum of these divisors (counting 81879938) is 1, the average is 0.125.

Base conversion 81879938

Base System Value
2 Binary 100111000010110001110000010
3 Ternary 12201001221011022
4 Quaternary 10320112032002
5 Quinary 131430124223
6 Senary 12042545442
8 Octal 470261602
10 Decimal 81879938
12 Duodecimal 23508282
16 Hexadecimal 4e16382
20 Vigesimal 15bejgi
36 Base36 1cqyyq

Cryptographic Hash Functions

md5 77897644d5736ede49d724b349df3816
sha1 21403b8ca0a98b95ade13abbf00b06de34715b59
sha256 d2ab2ef8f5cd214a3a16a3cc2f7f224223581da8e40fd48ebd768b1a32aa0455
sha512 0c106d209ac4f789ef314d0a39bfc98fab70effbf550e990c4d8e7c70ac2ff6d4b2bd99e28acb2144d478b4b8d80f1352fcead24e8f15850d731aadec6ce8982
ripemd-160 649bf78f8306c116d87e7bf7bfb3496784222b2d

81879938 as geometric shapes

Circle

Radius = n
Diameter 163759876
Circumference 514466823.39438
Area 2.1062255801294E+16

Sphere

Radius = n
Volume 2.2994349322001E+24
Surface area 8.4249023205177E+16
Circumference 514466823.39438

Square

Length = n
Perimeter 327519752
Area 6704324246883844
Diagonal 115795718.80587

Cube

Length = n
Surface area 40225945481303064
Volume 5.4894965366675E+23
Space diagonal 141820212.73659

Equilateral Triangle

Length = n
Perimeter 245639814
Area 2.9030575565047E+15
Altitude 70910106.368295

Triangular Pyramid

Length = n
Surface area 2.9030575565047E+15
Volume 6.4694337106294E+22
Height 38598572.935289