81900520 (number)

81900520 is an even 8-digits composite number following 81900519 and preceding 81900521. In scientific notation, it is written as 8.1900520 × 10^7. The sum of its digits is 25. It has a total of 7 prime factors and 64 positive divisors. There are 30067968 positive integers (up to 81900520) that are relatively prime to 81900520.

Interesting facts

Basic properties

Name

Name eighty-one million nine hundred thousand five hundred twenty

Notation

Scientific notation 8.1900520 × 10^7
Engineering notation 8.1900520 × 10^6

Prime Factorization of 81900520

Prime Factorization 2 × 2 × 2 × 5 × 659 × 13 × 239

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 20475130
Product of the distinct prime numbers

The prime factorization of 81900520 is 2 × 2 × 2 × 5 × 659 × 13 × 239. Since it has a total of 7 prime factors.

Most popular turbo-numbers

6, 3, 37, 79, 899, 333, 7849, 6872, 56459, 50040, 269438, 763421, 4878037, 9812810, 88997518, 23605747, 937670971, 896997000, 2127772083, 3275280778

Basic calculations (n = 81900520)

Multiplication

n×y
n×2 163801040
n×3 245701560
n×4 327602080
n×5 409502600

Division

n÷y
n÷2 40950260
n÷3 27300173.333333
n÷3 20475130
n÷5 16380104

Exponentiation

ny
n2 6707695176270400
n3 5.4936372293804E+23
n4 4.4993174577761E+31
n5 3.6849643943694E+39

Nth Root

y√n
2√n 9049.8906070737
3√n 434.27239089023
4√n 95.130912994009
5√n 38.252280507328

Divisors of 81900520

1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 239, 260, 478, 520, 659, 956, 1195, 1318, 1912, 2390, 2636, 3107, 3295, 4780, 5272, 6214, 6590, 8567, 9560, 12428, 13180, 15535, 17134, 24856, 26360, 31070, 34268, 42835, 62140, 68536, 85670, 124280, 157501, 171340, 315002, 342680, 630004, 787505, 1260008, 1575010, 2047513, 3150020, 4095026, 6300040, 8190052, 10237565, 16380104, 20475130, 40950260, 81900520

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81900519
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81900520 can be divided by 64 positive divisors. The sum of these divisors (counting 81900520) is 1, the average is 0.015625.

Base conversion 81900520

Base System Value
2 Binary 100111000011011001111101000
3 Ternary 12201002222101121
4 Quaternary 10320123033220
5 Quinary 131431304040
6 Senary 12043225024
8 Octal 470331750
10 Decimal 81900520
12 Duodecimal 23518174
16 Hexadecimal 4e1b3e8
20 Vigesimal 15bhb60
36 Base36 1creug

Cryptographic Hash Functions

md5 50874d4ee6fdba0c15b263c7ffe8fc01
sha1 01b2bea3c0cb451951413e6902126ea22c27754c
sha256 0692d1ddd956ab91ccf31bd1744fc17a6d63db07b48954ea29b07ada8e598f21
sha512 7e9c14e810f772a63f82b97ad262127ba0f88b005d589f2b39fbea76348fc745e2dbdab02117f1ef29f8f94be1b58efba0056a9cb191264a2862c267acc7a68b
ripemd-160 1c055489655b66d7c983d09e11fa04111dc9ace6

81900520 as geometric shapes

Circle

Radius = n
Diameter 163801040
Circumference 514596143.91437
Area 2.1072845888291E+16

Sphere

Radius = n
Volume 2.3011693815078E+24
Surface area 8.4291383553163E+16
Circumference 514596143.91437

Square

Length = n
Perimeter 327602080
Area 6707695176270400
Diagonal 115824826.14941

Cube

Length = n
Surface area 40246171057622400
Volume 5.4936372293804E+23
Space diagonal 141855861.80631

Equilateral Triangle

Length = n
Perimeter 245701560
Area 2.9045172117463E+15
Altitude 70927930.903155

Triangular Pyramid

Length = n
Surface area 2.9045172117463E+15
Volume 6.4743135637896E+22
Height 38608275.383136