81019904 (number)

81019904 is an even 8-digits composite number following 81019903 and preceding 81019905. In scientific notation, it is written as 8.1019904 × 10^7. The sum of its digits is 32. It has a total of 13 prime factors and 88 positive divisors. There are 34062336 positive integers (up to 81019904) that are relatively prime to 81019904.

Interesting facts

Basic properties

Name

Name eighty-one million nineteen thousand nine hundred four

Notation

Scientific notation 8.1019904 × 10^7
Engineering notation 8.1019904 × 10^6

Prime Factorization of 81019904

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 89 × 127

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 13
Total number of prime factors
rad Radical 158242
Product of the distinct prime numbers

The prime factorization of 81019904 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 89 × 127. Since it has a total of 13 prime factors.

Most popular turbo-numbers

9, 4, 54, 46, 21, 331, 9979, 1885, 35600, 94354, 239856, 436331, 653975, 4881921, 99994620, 32183995, 420565541, 998409876, 4634535950, 4316413292

Basic calculations (n = 81019904)

Multiplication

n×y
n×2 162039808
n×3 243059712
n×4 324079616
n×5 405099520

Division

n÷y
n÷2 40509952
n÷3 27006634.666667
n÷3 20254976
n÷5 16203980.8

Exponentiation

ny
n2 6564224844169216
n3 5.31832866709E+23
n4 4.3089047804808E+31
n5 3.491070516597E+39

Nth Root

y√n
2√n 9001.1057098559
3√n 432.71030835695
4√n 94.874157228699
5√n 38.169664693747

Divisors of 81019904

1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 89, 112, 127, 128, 178, 224, 254, 256, 356, 448, 508, 512, 623, 712, 889, 896, 1016, 1024, 1246, 1424, 1778, 1792, 2032, 2492, 2848, 3556, 3584, 4064, 4984, 5696, 7112, 7168, 8128, 9968, 11303, 11392, 14224, 16256, 19936, 22606, 22784, 28448, 32512, 39872, 45212, 45568, 56896, 65024, 79121, 79744, 90424, 91136, 113792, 130048, 158242, 159488, 180848, 227584, 316484, 318976, 361696, 455168, 632968, 637952, 723392, 910336, 1265936, 1446784, 2531872, 2893568, 5063744, 5787136, 10127488, 11574272, 20254976, 40509952, 81019904

88 divisors

τ Total Divisors 88
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81019903
Sum of the proper positive divisors of n
A Arithmetic Mean 0.011363636363636
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 88
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81019904 can be divided by 88 positive divisors. The sum of these divisors (counting 81019904) is 1, the average is 0.011363636363636.

Base conversion 81019904

Base System Value
2 Binary 100110101000100010000000000
3 Ternary 12122110020102012
4 Quaternary 10311010100000
5 Quinary 131220114104
6 Senary 12012312052
8 Octal 465042000
10 Decimal 81019904
12 Duodecimal 23172628
16 Hexadecimal 4d44400
20 Vigesimal 15679f4
36 Base36 1c8jcw

Cryptographic Hash Functions

md5 f22700b85b7d3658d28bec378cf37051
sha1 e6c2031a0f0e86f4ee1a9582e3d858bc23d6c9ed
sha256 add1a9b4f8c7e8406e781fe8fda43b8cbc2c23c760fffadc66e54d00d64ef5cc
sha512 803dea462ca8f506d59ed4a00ca3c2ad59571020c241f7dc431db52446bd72f17263bafe6ef08dc2e60938b8be4f321c5f59f41de8ab85c03269c1480e1fe2a0
ripemd-160 d1e0efb60708b1009a0699ea6922a14461f4ab2c

81019904 as geometric shapes

Circle

Radius = n
Diameter 162039808
Circumference 509063070.4019
Area 2.0622120546954E+16

Sphere

Radius = n
Volume 2.2277363026541E+24
Surface area 8.2488482187814E+16
Circumference 509063070.4019

Square

Length = n
Perimeter 324079616
Area 6564224844169216
Diagonal 114579447.05897

Cube

Length = n
Surface area 39385349065015296
Volume 5.31832866709E+23
Space diagonal 140330590.15235

Equilateral Triangle

Length = n
Perimeter 243059712
Area 2.8423927356017E+15
Altitude 70165295.076176

Triangular Pyramid

Length = n
Surface area 2.8423927356017E+15
Volume 6.267710441797E+22
Height 38193149.019655