Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

81508972 (number)

81508972 is an even 8-digits composite number following 81508971 and preceding 81508973. In scientific notation, it is written as 8.1508972 × 10^7. The sum of its digits is 40. It has a total of 5 prime factors and 24 positive divisors. There are 39755520 positive integers (up to 81508972) that are relatively prime to 81508972.

Interesting facts

81508972 has 24 divisors, whose sum is 146175120
The reverse of 81508972 is 27980518
Previous prime number is 59

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 40
Digital Root 4

Name

Name	eighty-one million five hundred eight thousand nine hundred seventy-two

Notation

Scientific notation	8.1508972 × 10^7
Engineering notation	8.1508972 × 10^6

Prime Factorization of 81508972

Prime Factorization 2 × 2 × 137 × 59 × 2521

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	5	Total number of prime factors
rad	Radical	40754486	Product of the distinct prime numbers

The prime factorization of 81508972 is 2 × 2 × 137 × 59 × 2521. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 9, 64, 47, 365, 659, 1556, 9309, 19990, 71302, 442899, 109094, 6497234, 2536522, 47096428, 15949296, 20654877, 344593375, 1335234258, 6018234613

Basic calculations (n = 81508972)

Multiplication

n×y

n×2	163017944
n×3	244526916
n×4	326035888
n×5	407544860

Division

n÷y

n÷2	40754486
n÷3	27169657.333333
n÷3	20377243
n÷5	16301794.4

Exponentiation

n^y

n²	6643712516496784
n³	5.4152217748319E+23
n⁴	4.4138916001856E+31
n⁵	3.5977176685056E+39

Nth Root

^y√n

²√n	9028.2319420804
³√n	433.57923216526
⁴√n	95.017008698866
⁵√n	38.215635249919

Divisors of 81508972

1, 2, 4, 59, 118, 137, 236, 274, 548, 2521, 5042, 8083, 10084, 16166, 32332, 148739, 297478, 345377, 594956, 690754, 1381508, 20377243, 40754486, 81508972

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	-81508971	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 81508972 can be divided by 24 positive divisors. The sum of these divisors (counting 81508972) is 1, the average is 0.041666666666667.

Base conversion 81508972

Base	System	Value
2	Binary	100110110111011101001101100
3	Ternary	12200101002021211
4	Quaternary	10312323221230
5	Quinary	131331241342
6	Senary	12031004204
8	Octal	466735154
10	Decimal	81508972
12	Duodecimal	23369664
16	Hexadecimal	4dbba6c
20	Vigesimal	1598c8c
36	Base36	1cj0q4

Cryptographic Hash Functions

md5	0ff5a9d1930f91044c78241c2ca2631c
sha1	d943c3cc3ba2296a18f47357c78f332bfe254b80
sha256	11254f5224697416ce37f1ee30788265f09b926fc310cc0fe3eb0c6aa83eae64
sha512	40b87108be105a0fd9f6929968dd5d6c71ab8041c58dd4fc3760ee89820b2e19026eae89a5fad4344fe82d40cc1d1bb9ed3c02cb5c2ecbaea44dbbdca1cf437b
ripemd-160	a02dc50b1119e14d3e5b3462d3b0aff2cd6cbd67

81508972 as geometric shapes

Circle

Radius = n

Diameter	163017944
Circumference	512135975.27371
Area	2.0871838434389E+16

Sphere

Radius = n

Volume	2.2683227927162E+24
Surface area	8.3487353737555E+16
Circumference	512135975.27371

Square

Length = n

Perimeter	326035888
Area	6643712516496784
Diagonal	115271093.65749

Cube

Length = n

Surface area	39862275098980704
Volume	5.4152217748319E+23
Space diagonal	141177680.77671

Equilateral Triangle

Length = n

Perimeter	244526916
Area	2.8768119073634E+15
Altitude	70588840.388354

Triangular Pyramid

Length = n

Surface area	2.8768119073634E+15
Volume	6.3819000643544E+22
Height	38423697.88583