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

81872021 (number)

81872021 is an odd 8-digits composite number following 81872020 and preceding 81872022. In scientific notation, it is written as 8.1872021 × 10^7. The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors. There are 63796320 positive integers (up to 81872021) that are relatively prime to 81872021.

Interesting facts

81872021 has 8 divisors, whose sum is 102074304
The reverse of 81872021 is 12027818
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2

Name

Name	eighty-one million eight hundred seventy-two thousand twenty-one

Notation

Scientific notation	8.1872021 × 10^7
Engineering notation	8.1872021 × 10^6

Prime Factorization of 81872021

Prime Factorization 11 × 7 × 1063273

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81872021	Product of the distinct prime numbers

The prime factorization of 81872021 is 11 × 7 × 1063273. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 7, 10, 35, 879, 499, 5138, 2615, 17595, 83632, 706092, 612295, 8937292, 8584692, 72788060, 54084793, 640965192, 314721723, 276817079, 2859502535

Basic calculations (n = 81872021)

Multiplication

n×y

n×2	163744042
n×3	245616063
n×4	327488084
n×5	409360105

Division

n÷y

n÷2	40936010.5
n÷3	27290673.666667
n÷3	20468005.25
n÷5	16374404.2

Exponentiation

n^y

n²	6703027822624441
n³	5.4879043465749E+23
n⁴	4.4930581990877E+31
n⁵	3.6785575522993E+39

Nth Root

^y√n

²√n	9048.3159206562
³√n	434.22201365746
⁴√n	95.122636215867
⁵√n	38.249618000398

Divisors of 81872021

1, 7, 11, 77, 1063273, 7442911, 11696003, 81872021

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81872020	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81872021 can be divided by 8 positive divisors. The sum of these divisors (counting 81872021) is 1, the average is 0.125.

Base conversion 81872021

Base	System	Value
2	Binary	100111000010100010010010101
3	Ternary	12201001112022002
4	Quaternary	10320110102111
5	Quinary	131424401041
6	Senary	12042445045
8	Octal	470242225
10	Decimal	81872021
12	Duodecimal	23503785
16	Hexadecimal	4e14495
20	Vigesimal	15be011
36	Base36	1cqsut

Cryptographic Hash Functions

md5	b1a71b72b36917a33952ba27ff2c0f6f
sha1	15fc97e6131546f7617166dd8b2de218f8b6116e
sha256	409b7d07e80c94cc493600ea8d9776b87b4473172cb7778abdc749dc37e7d55c
sha512	ef3eef99ecaf10bbee5675870b8b5dbf21dbfa82e0c634bf49a74849769301eca16122ef1daec1a8f78d7023b6156ba45abca433b4e18e6a0dcaef5d998def03
ripemd-160	841bbe71e8b7c1ff2f1c45ccba7eda0aff0e0d95

81872021 as geometric shapes

Circle

Radius = n

Diameter	163744042
Circumference	514417079.4163
Area	2.1058182964365E+16

Sphere

Radius = n

Volume	2.2987679971738E+24
Surface area	8.423273185746E+16
Circumference	514417079.4163

Square

Length = n

Perimeter	327488084
Area	6703027822624441
Diagonal	115784522.47709

Cube

Length = n

Surface area	40218166935746646
Volume	5.4879043465749E+23
Space diagonal	141806500.09035

Equilateral Triangle

Length = n

Perimeter	245616063
Area	2.9024961883333E+15
Altitude	70903250.045173

Triangular Pyramid

Length = n

Surface area	2.9024961883333E+15
Volume	6.4675572966104E+22
Height	38594840.825698