81279880 (number)

81279880 is an even 8-digits composite number following 81279879 and preceding 81279881. In scientific notation, it is written as 8.1279880 × 10^7. The sum of its digits is 43. It has a total of 6 prime factors and 32 positive divisors. There are 29556160 positive integers (up to 81279880) that are relatively prime to 81279880.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1279880 × 10^7
Engineering notation 8.1279880 × 10^6

Prime Factorization of 81279880

Prime Factorization 2 × 2 × 2 × 5 × 11 × 184727

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 20319970
Product of the distinct prime numbers

The prime factorization of 81279880 is 2 × 2 × 2 × 5 × 11 × 184727. Since it has a total of 6 prime factors.

Most popular turbo-numbers

9, 1, 91, 24, 687, 142, 5344, 9844, 76580, 35208, 47192, 679567, 7028936, 6952978, 80572768, 10541148, 805821540, 630664791, 8370582053, 9918535462

Basic calculations (n = 81279880)

Multiplication

n×y
n×2 162559760
n×3 243839640
n×4 325119520
n×5 406399400

Division

n÷y
n÷2 40639940
n÷3 27093293.333333
n÷3 20319970
n÷5 16255976

Exponentiation

ny
n2 6606418892814400
n3 5.3696893483769E+23
n4 4.3644770587335E+31
n5 3.5474417159661E+39

Nth Root

y√n
2√n 9015.5354804914
3√n 433.17263995708
4√n 94.950173672782
5√n 38.194129014579

Divisors of 81279880

1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 184727, 369454, 738908, 923635, 1477816, 1847270, 2031997, 3694540, 4063994, 7389080, 8127988, 10159985, 16255976, 20319970, 40639940, 81279880

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81279879
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81279880 can be divided by 32 positive divisors. The sum of these divisors (counting 81279880) is 1, the average is 0.03125.

Base conversion 81279880

Base System Value
2 Binary 100110110000011101110001000
3 Ternary 12122221110000221
4 Quaternary 10312003232020
5 Quinary 131301424010
6 Senary 12022035424
8 Octal 466035610
10 Decimal 81279880
12 Duodecimal 23278b74
16 Hexadecimal 4d83b88
20 Vigesimal 157jje0
36 Base36 1ce3yg

Cryptographic Hash Functions

md5 649557f88e438ace0958de8de43ac50c
sha1 fe47446e50c5f04dcbb16a49e7fefc446e968b0c
sha256 3dd9ea184f5d5e0bafa629f6be5da63468d0053d4fbe2aba6aea56ecc58249fc
sha512 9c335e47b65ef2de9d87ee9a586ab6fbe91fdb4905ac612f3960f0923a553a9b712fa3eb06b0b6f1f710fc8e266a02de2c9cb2983076008768650636088f958c
ripemd-160 7d0d62f81f50d0418bba357eeeef9007c3a7e914

81279880 as geometric shapes

Circle

Radius = n
Diameter 162559760
Circumference 510696547.78532
Area 2.0754677060203E+16

Sphere

Radius = n
Volume 2.2492502145227E+24
Surface area 8.301870824081E+16
Circumference 510696547.78532

Square

Length = n
Perimeter 325119520
Area 6606418892814400
Diagonal 114947108.64406

Cube

Length = n
Surface area 39638513356886400
Volume 5.3696893483769E+23
Space diagonal 140780881.7931

Equilateral Triangle

Length = n
Perimeter 243839640
Area 2.8606632946094E+15
Altitude 70390440.896551

Triangular Pyramid

Length = n
Surface area 2.8606632946094E+15
Volume 6.3282395851708E+22
Height 38315702.881353