81159904 (number)

81159904 is an even 8-digits composite number following 81159903 and preceding 81159905. In scientific notation, it is written as 8.1159904 × 10^7. The sum of its digits is 37. It has a total of 8 prime factors and 48 positive divisors. There are 32735232 positive integers (up to 81159904) that are relatively prime to 81159904.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred fifty-nine thousand nine hundred four

Notation

Scientific notation 8.1159904 × 10^7
Engineering notation 8.1159904 × 10^6

Prime Factorization of 81159904

Prime Factorization 2 × 2 × 2 × 2 × 2 × 7 × 17 × 21313

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 5072494
Product of the distinct prime numbers

The prime factorization of 81159904 is 2 × 2 × 2 × 2 × 2 × 7 × 17 × 21313. Since it has a total of 8 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81159904)

Multiplication

n×y
n×2 162319808
n×3 243479712
n×4 324639616
n×5 405799520

Division

n÷y
n÷2 40579952
n÷3 27053301.333333
n÷3 20289976
n÷5 16231980.8

Exponentiation

ny
n2 6586930017289216
n3 5.3459460785791E+23
n4 4.3387647052666E+31
n5 3.5213372695802E+39

Nth Root

y√n
2√n 9008.879175569
3√n 432.95940181209
4√n 94.915115632701
5√n 38.182846796118

Divisors of 81159904

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81159903
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81159904 can be divided by 48 positive divisors. The sum of these divisors (counting 81159904) is 1, the average is 0.020833333333333.

Base conversion 81159904

Base System Value
2 Binary 100110101100110011011100000
3 Ternary 12122201100110101
4 Quaternary 10311212123200
5 Quinary 131234104104
6 Senary 12015312144
8 Octal 465463340
10 Decimal 81159904
12 Duodecimal 2321b654
16 Hexadecimal 4d666e0
20 Vigesimal 1574jf4
36 Base36 1cbjds

Cryptographic Hash Functions

md5 6fdbe3009fc7f0e981fb11ad408c584c
sha1 aa3592c9c617210af75235bc25a3fe3dfd73e8f0
sha256 708c3a8f40b518cf61ed62cd65756c267a6efe6086b066be54838290eb8c53ef
sha512 7d02b23297c7f776903252868ded9e7095216deab735a681b103612657932d859852fa73697af54e98f30b1759553a03a6fb8b66fc14ca87378df1bfdd16a74f
ripemd-160 7b82ed87245a0a961758df9820a180d929b2fbf8

81159904 as geometric shapes

Circle

Radius = n
Diameter 162319808
Circumference 509942716.34491
Area 2.0693450952026E+16

Sphere

Radius = n
Volume 2.2393046569268E+24
Surface area 8.2773803808104E+16
Circumference 509942716.34491

Square

Length = n
Perimeter 324639616
Area 6586930017289216
Diagonal 114777436.9577

Cube

Length = n
Surface area 39521580103735296
Volume 5.3459460785791E+23
Space diagonal 140573077.26541

Equilateral Triangle

Length = n
Perimeter 243479712
Area 2.8522243639614E+15
Altitude 70286538.632706

Triangular Pyramid

Length = n
Surface area 2.8522243639614E+15
Volume 6.3002578733682E+22
Height 38259145.652566