81489904 (number)

81489904 is an even 8-digits composite number following 81489903 and preceding 81489905. In scientific notation, it is written as 8.1489904 × 10^7. The sum of its digits is 43. It has a total of 6 prime factors and 20 positive divisors. There are 40668800 positive integers (up to 81489904) that are relatively prime to 81489904.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1489904 × 10^7
Engineering notation 8.1489904 × 10^6

Prime Factorization of 81489904

Prime Factorization 2 × 2 × 2 × 2 × 569 × 8951

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 10186238
Product of the distinct prime numbers

The prime factorization of 81489904 is 2 × 2 × 2 × 2 × 569 × 8951. Since it has a total of 6 prime factors.

Most popular turbo-numbers

4, 4, 50, 65, 506, 289, 717, 6838, 96367, 77443, 704243, 862456, 9634614, 9093179, 51899094, 62529643, 657517319, 24346373, 2687272025, 6513838258

Basic calculations (n = 81489904)

Multiplication

n×y
n×2 162979808
n×3 244469712
n×4 325959616
n×5 407449520

Division

n÷y
n÷2 40744952
n÷3 27163301.333333
n÷3 20372476
n÷5 16297980.8

Exponentiation

ny
n2 6640604453929216
n3 5.4114221945266E+23
n4 4.4097627513545E+31
n5 3.5935114327065E+39

Nth Root

y√n
2√n 9027.175859592
3√n 433.54541939034
4√n 95.011451202431
5√n 38.213847069029

Divisors of 81489904

1, 2, 4, 8, 16, 569, 1138, 2276, 4552, 8951, 9104, 17902, 35804, 71608, 143216, 5093119, 10186238, 20372476, 40744952, 81489904

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81489903
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81489904 can be divided by 20 positive divisors. The sum of these divisors (counting 81489904) is 1, the average is 0.05.

Base conversion 81489904

Base System Value
2 Binary 100110110110110111111110000
3 Ternary 12200100010010121
4 Quaternary 10312312333300
5 Quinary 131330134104
6 Senary 12030340024
8 Octal 466667760
10 Decimal 81489904
12 Duodecimal 2335a614
16 Hexadecimal 4db6ff0
20 Vigesimal 15964f4
36 Base36 1cim0g

Cryptographic Hash Functions

md5 1b9c8edf6b53ad403459b78a5a0003ee
sha1 6cfd5bdee592cafaff1d0a23007e724454432a5b
sha256 e42fa90568656c53e4d104245427a2c141a60ce87b887c0ebcc49447517d30b2
sha512 d32b4720ed1585bf0cb886c186b54b0e6637c472e527f28e322f4de0ee22a376f8144bb76c38ef0befc0c63107a2d99f29701ae97398848d0f65195c7ca7c920
ripemd-160 ad566a844eb8c5bbea0cc1f41ce758f3d1057f44

81489904 as geometric shapes

Circle

Radius = n
Diameter 162979808
Circumference 512016167.49628
Area 2.086207416786E+16

Sphere

Radius = n
Volume 2.2667312282397E+24
Surface area 8.3448296671439E+16
Circumference 512016167.49628

Square

Length = n
Perimeter 325959616
Area 6640604453929216
Diagonal 115244127.43328

Cube

Length = n
Surface area 39843626723575296
Volume 5.4114221945266E+23
Space diagonal 141144654.03191

Equilateral Triangle

Length = n
Perimeter 244469712
Area 2.8754660767934E+15
Altitude 70572327.015955

Triangular Pyramid

Length = n
Surface area 2.8754660767934E+15
Volume 6.377422216022E+22
Height 38414709.144427