81888090 (number)

81888090 is an even 8-digits composite number following 81888089 and preceding 81888091. In scientific notation, it is written as 8.1888090 × 10^7. The sum of its digits is 42. It has a total of 5 prime factors and 32 positive divisors. There are 21624000 positive integers (up to 81888090) that are relatively prime to 81888090.

Interesting facts

Basic properties

Name

Name eighty-one million eight hundred eighty-eight thousand ninety

Notation

Scientific notation 8.1888090 × 10^7
Engineering notation 8.1888090 × 10^6

Prime Factorization of 81888090

Prime Factorization 2 × 5 × 3 × 103 × 26501

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81888090
Product of the distinct prime numbers

The prime factorization of 81888090 is 2 × 5 × 3 × 103 × 26501. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 2, 92, 91, 535, 562, 8624, 413, 86070, 79496, 744646, 435303, 4864100, 7022518, 53269406, 73351516, 588411765, 321919539, 3359840938, 7105870506

Basic calculations (n = 81888090)

Multiplication

n×y
n×2 163776180
n×3 245664270
n×4 327552360
n×5 409440450

Division

n÷y
n÷2 40944045
n÷3 27296030
n÷3 20472022.5
n÷5 16377618

Exponentiation

ny
n2 6705659283848100
n3 5.4911363094509E+23
n4 4.4965866431058E+31
n5 3.6821689172345E+39

Nth Root

y√n
2√n 9049.2038323822
3√n 434.25042001253
4√n 95.127303296068
5√n 38.251119331027

Divisors of 81888090

1, 2, 3, 5, 6, 10, 15, 30, 103, 206, 309, 515, 618, 1030, 1545, 3090, 26501, 53002, 79503, 132505, 159006, 265010, 397515, 795030, 2729603, 5459206, 8188809, 13648015, 16377618, 27296030, 40944045, 81888090

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81888089
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81888090 can be divided by 32 positive divisors. The sum of these divisors (counting 81888090) is 1, the average is 0.03125.

Base conversion 81888090

Base System Value
2 Binary 100111000011000001101011010
3 Ternary 12201002100100020
4 Quaternary 10320120031122
5 Quinary 131430404330
6 Senary 12043051310
8 Octal 470301532
10 Decimal 81888090
12 Duodecimal 23510b36
16 Hexadecimal 4e1835a
20 Vigesimal 15bg04a
36 Base36 1cr596

Cryptographic Hash Functions

md5 0e9f68538be30fe7dec78ab77d47cd3e
sha1 664eb5f0be3534321e340fcfd70abd04d1cad226
sha256 08bbb71a2c9a07bc5d1fafc7c089028cf496b422c8d41fb1e21b899e126a623f
sha512 d36853c0b38b31b13f41fe327c80ad58a637306ee1fad22854bf7f395dbbb5d6076cb1d4293f05367195555f1ed1dcd2511c18f815d181c44eae67d60df7059e
ripemd-160 7e5ff3f459c67cba002e0a0f6a1b5682af0e7043

81888090 as geometric shapes

Circle

Radius = n
Diameter 163776180
Circumference 514518043.921
Area 2.1066449943613E+16

Sphere

Radius = n
Volume 2.3001217986175E+24
Surface area 8.4265799774454E+16
Circumference 514518043.921

Square

Length = n
Perimeter 327552360
Area 6705659283848100
Diagonal 115807247.47483

Cube

Length = n
Surface area 40233955703088600
Volume 5.4911363094509E+23
Space diagonal 141834332.41477

Equilateral Triangle

Length = n
Perimeter 245664270
Area 2.9036356444677E+15
Altitude 70917166.207386

Triangular Pyramid

Length = n
Surface area 2.9036356444677E+15
Volume 6.4713662013873E+22
Height 38602415.824943