81489916 (number)

81489916 is an even 8-digits composite number following 81489915 and preceding 81489917. In scientific notation, it is written as 8.1489916 × 10^7. The sum of its digits is 46. It has a total of 5 prime factors and 24 positive divisors. There are 39495600 positive integers (up to 81489916) that are relatively prime to 81489916.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1489916 × 10^7
Engineering notation 8.1489916 × 10^6

Prime Factorization of 81489916

Prime Factorization 2 × 2 × 107 × 47 × 4051

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40744958
Product of the distinct prime numbers

The prime factorization of 81489916 is 2 × 2 × 107 × 47 × 4051. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 9, 7, 98, 358, 929, 3506, 6964, 49235, 99819, 840373, 642283, 578496, 4337341, 83671347, 80438671, 632308066, 60245589, 2967559516, 7642578273

Basic calculations (n = 81489916)

Multiplication

n×y
n×2 162979832
n×3 244469748
n×4 325959664
n×5 407449580

Division

n÷y
n÷2 40744958
n÷3 27163305.333333
n÷3 20372479
n÷5 16297983.2

Exponentiation

ny
n2 6640606409687056
n3 5.4114245851446E+23
n4 4.4097653488377E+31
n5 3.5935140785649E+39

Nth Root

y√n
2√n 9027.1765242516
3√n 433.54544067128
4√n 95.011454700218
5√n 38.213848194484

Divisors of 81489916

1, 2, 4, 47, 94, 107, 188, 214, 428, 4051, 5029, 8102, 10058, 16204, 20116, 190397, 380794, 433457, 761588, 866914, 1733828, 20372479, 40744958, 81489916

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 -81489915
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 81489916 can be divided by 24 positive divisors. The sum of these divisors (counting 81489916) is 1, the average is 0.041666666666667.

Base conversion 81489916

Base System Value
2 Binary 100110110110110111111111100
3 Ternary 12200100010011001
4 Quaternary 10312312333330
5 Quinary 131330134131
6 Senary 12030340044
8 Octal 466667774
10 Decimal 81489916
12 Duodecimal 2335a624
16 Hexadecimal 4db6ffc
20 Vigesimal 15964fg
36 Base36 1cim0s

Cryptographic Hash Functions

md5 b49669613ba1099a193160974b86ef1f
sha1 f9fb0421dc5288e87b8f318bab629d98b1b8e288
sha256 4a53254cd4569323c67a4a5198c601b8d69681f31fce9d3e2ca261da146a3fc5
sha512 219fd0c50af5229bf5565979bcfc223cd6147b1f98ede1ee54545f0863adb46973120b9c54c35602c7f529f7791ca30940e6dc41a5bdbe1f33e0bbfff43171e8
ripemd-160 b942c2dc442a4d4a66018d32458136129c11f8bb

81489916 as geometric shapes

Circle

Radius = n
Diameter 162979832
Circumference 512016242.8945
Area 2.0862080312054E+16

Sphere

Radius = n
Volume 2.2667322296194E+24
Surface area 8.3448321248217E+16
Circumference 512016242.8945

Square

Length = n
Perimeter 325959664
Area 6640606409687056
Diagonal 115244144.40384

Cube

Length = n
Surface area 39843638458122336
Volume 5.4114245851446E+23
Space diagonal 141144674.81652

Equilateral Triangle

Length = n
Perimeter 244469748
Area 2.8754669236614E+15
Altitude 70572337.40826

Triangular Pyramid

Length = n
Surface area 2.8754669236614E+15
Volume 6.3774250333922E+22
Height 38414714.801281