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

81686937 (number)

81686937 is an odd 8-digits composite number following 81686936 and preceding 81686938. In scientific notation, it is written as 8.1686937 × 10^7. The sum of its digits is 48. It has a total of 2 prime factors and 4 positive divisors. There are 54457956 positive integers (up to 81686937) that are relatively prime to 81686937.

Interesting facts

81686937 has 4 divisors, whose sum is 108915920
The reverse of 81686937 is 73968618
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 48
Digital Root 3

Name

Name	eighty-one million six hundred eighty-six thousand nine hundred thirty-seven

Notation

Scientific notation	8.1686937 × 10^7
Engineering notation	8.1686937 × 10^6

Prime Factorization of 81686937

Prime Factorization 3 × 27228979

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81686937	Product of the distinct prime numbers

The prime factorization of 81686937 is 3 × 27228979. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 2, 80, 35, 644, 233, 7731, 7518, 59075, 87138, 55659, 574616, 3977107, 6973464, 13043308, 46813861, 887075241, 966411122, 6042915573, 3815295262

Basic calculations (n = 81686937)

Multiplication

n×y

n×2	163373874
n×3	245060811
n×4	326747748
n×5	408434685

Division

n÷y

n÷2	40843468.5
n÷3	27228979
n÷3	20421734.25
n÷5	16337387.4

Exponentiation

n^y

n²	6672755676441969
n³	5.4507697255791E+23
n⁴	4.4525668317489E+31
n⁵	3.6371654627336E+39

Nth Root

^y√n

²√n	9038.0825953296
³√n	433.8945587535
⁴√n	95.068830829718
⁵√n	38.232308539803

Divisors of 81686937

1, 3, 27228979, 81686937

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81686936	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81686937 can be divided by 4 positive divisors. The sum of these divisors (counting 81686937) is 1, the average is 0.25.

Base conversion 81686937

Base	System	Value
2	Binary	100110111100111000110011001
3	Ternary	12200201010102010
4	Quaternary	10313213012121
5	Quinary	131402440222
6	Senary	12034500133
8	Octal	467470631
10	Decimal	81686937
12	Duodecimal	23434649
16	Hexadecimal	4de7199
20	Vigesimal	15aah6h
36	Base36	1cmu1l

Cryptographic Hash Functions

md5	a5148e722639b75dfec79aafe2e39052
sha1	4de758491683b82fce305b563d9a6b7e3c82c7c0
sha256	0c9a0a580fbd38963c8942f6dfefafed65617f08fb947c28f079af362462d7f5
sha512	d5072a515b1c7b6c6e9a4b3c6411a94eea175d910c4c51b3c6e7d3e13ffed258333c7cc3e8723f422b83015234bcea0def1de0a17d389b98e6cbd2a1d1786708
ripemd-160	475e2296fa4add90c79fdd54faad66321650c7ee

81686937 as geometric shapes

Circle

Radius = n

Diameter	163373874
Circumference	513254162.3469
Area	2.096308021231E+16

Sphere

Radius = n

Volume	2.2832130835052E+24
Surface area	8.3852320849239E+16
Circumference	513254162.3469

Square

Length = n

Perimeter	326747748
Area	6672755676441969
Diagonal	115522774.17412

Cube

Length = n

Surface area	40036534058651814
Volume	5.4507697255791E+23
Space diagonal	141485925.19868

Equilateral Triangle

Length = n

Perimeter	245060811
Area	2.8893879645228E+15
Altitude	70742962.599339

Triangular Pyramid

Length = n

Surface area	2.8893879645228E+15
Volume	6.4237937260722E+22
Height	38507591.391372