81279897 (number)

81279897 is an odd 8-digits composite number following 81279896 and preceding 81279898. In scientific notation, it is written as 8.1279897 × 10^7. The sum of its digits is 51. It has a total of 3 prime factors and 8 positive divisors. There are 54155472 positive integers (up to 81279897) that are relatively prime to 81279897.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1279897 × 10^7
Engineering notation 8.1279897 × 10^6

Prime Factorization of 81279897

Prime Factorization 3 × 1997 × 13567

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81279897
Product of the distinct prime numbers

The prime factorization of 81279897 is 3 × 1997 × 13567. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81279897)

Multiplication

n×y
n×2 162559794
n×3 243839691
n×4 325119588
n×5 406399485

Division

n÷y
n÷2 40639948.5
n÷3 27093299
n÷3 20319974.25
n÷5 16255979.4

Exponentiation

ny
n2 6606421656330609
n3 5.3696927176512E+23
n4 4.3644807101234E+31
n5 3.5474454257732E+39

Nth Root

y√n
2√n 9015.5364233084
3√n 433.17267015698
4√n 94.95017863758
5√n 38.194130612269

Divisors of 81279897

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 -81279896
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 81279897 can be divided by 8 positive divisors. The sum of these divisors (counting 81279897) is 1, the average is 0.125.

Base conversion 81279897

Base System Value
2 Binary 100110110000011101110011001
3 Ternary 12122221110001120
4 Quaternary 10312003232121
5 Quinary 131301424042
6 Senary 12022035453
8 Octal 466035631
10 Decimal 81279897
12 Duodecimal 23278b89
16 Hexadecimal 4d83b99
20 Vigesimal 157jjeh
36 Base36 1ce3yx

Cryptographic Hash Functions

md5 0e981821fdf7025ee4e28de838c66a99
sha1 cb543e73ae7a621d59458d9eea23bc5af036abbe
sha256 28520e2e5e5ea9a71d64e25405bdeec169a5876d1111540561a898ccec7796dc
sha512 a330507ea28452eed843c6dd291b4a065403fcd328b49cc2bc4397778bddfb0bc751e2e490afea4c6f0265c1d00179223f09644228048395776462423c47e2ec
ripemd-160 3b110be5d6f201663e701a819fdfdaaaa987d801

81279897 as geometric shapes

Circle

Radius = n
Diameter 162559794
Circumference 510696654.59947
Area 2.0754685742045E+16

Sphere

Radius = n
Volume 2.249251625841E+24
Surface area 8.3018742968179E+16
Circumference 510696654.59947

Square

Length = n
Perimeter 325119588
Area 6606421656330609
Diagonal 114947132.68569

Cube

Length = n
Surface area 39638529937983654
Volume 5.3696927176512E+23
Space diagonal 140780911.23797

Equilateral Triangle

Length = n
Perimeter 243839691
Area 2.860664491247E+15
Altitude 70390455.618983

Triangular Pyramid

Length = n
Surface area 2.860664491247E+15
Volume 6.3282435558987E+22
Height 38315710.895229