81878980 (number)

81878980 is an even 8-digits composite number following 81878979 and preceding 81878981. In scientific notation, it is written as 8.1878980 × 10^7. The sum of its digits is 49. It has a total of 5 prime factors and 24 positive divisors. There are 31027680 positive integers (up to 81878980) that are relatively prime to 81878980.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1878980 × 10^7
Engineering notation 8.1878980 × 10^6

Prime Factorization of 81878980

Prime Factorization 2 × 2 × 5 × 19 × 215471

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40939490
Product of the distinct prime numbers

The prime factorization of 81878980 is 2 × 2 × 5 × 19 × 215471. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 1, 89, 88, 496, 377, 5741, 4506, 303, 85180, 575935, 643824, 2877498, 4005320, 31603950, 47152034, 794756022, 932016474, 479188120, 8947156994

Basic calculations (n = 81878980)

Multiplication

n×y
n×2 163757960
n×3 245636940
n×4 327515920
n×5 409394900

Division

n÷y
n÷2 40939490
n÷3 27292993.333333
n÷3 20469745
n÷5 16375796

Exponentiation

ny
n2 6704167365840400
n3 5.489303856643E+23
n4 4.4945860069199E+31
n5 3.6801211776888E+39

Nth Root

y√n
2√n 9048.700459182
3√n 434.23431605066
4√n 95.124657472087
5√n 38.250268210419

Divisors of 81878980

1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 215471, 430942, 861884, 1077355, 2154710, 4093949, 4309420, 8187898, 16375796, 20469745, 40939490, 81878980

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81878979
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81878980 can be divided by 24 positive divisors. The sum of these divisors (counting 81878980) is 1, the average is 0.041666666666667.

Base conversion 81878980

Base System Value
2 Binary 100111000010101111111000100
3 Ternary 12201001212211211
4 Quaternary 10320111333010
5 Quinary 131430111410
6 Senary 12042541204
8 Octal 470257704
10 Decimal 81878980
12 Duodecimal 23507804
16 Hexadecimal 4e15fc4
20 Vigesimal 15beh90
36 Base36 1cqy84

Cryptographic Hash Functions

md5 3909f37adc789916d7444a315774d720
sha1 7c6db3f585f8b7d5e089aa663ba4e1ab20bfa94b
sha256 d2057e46bd25c98dc2dd009763c47bcb7a500f9b0aabdd545690eacc6276a59f
sha512 de7e78739298bba246f0496d593212a59f1977b86ad134a6d5cb2d824e3ffded7997668cf825538f17b5d1d1f33464040fb6cd5ae0a5c8caecb975c74fe37212
ripemd-160 d9c2487afca84f86a16d26d51b34667f160cd671

81878980 as geometric shapes

Circle

Radius = n
Diameter 163757960
Circumference 514460804.10285
Area 2.1061762944961E+16

Sphere

Radius = n
Volume 2.2993542225802E+24
Surface area 8.4247051779843E+16
Circumference 514460804.10285

Square

Length = n
Perimeter 327515920
Area 6704167365840400
Diagonal 115794363.98928

Cube

Length = n
Surface area 40225004195042400
Volume 5.489303856643E+23
Space diagonal 141818553.43192

Equilateral Triangle

Length = n
Perimeter 245636940
Area 2.9029896250202E+15
Altitude 70909276.715958

Triangular Pyramid

Length = n
Surface area 2.9029896250202E+15
Volume 6.4692066350429E+22
Height 38598121.329758