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

81640761 (number)

81640761 is an odd 8-digits composite number following 81640760 and preceding 81640762. In scientific notation, it is written as 8.1640761 × 10^7. The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors. There are 54387600 positive integers (up to 81640761) that are relatively prime to 81640761.

Interesting facts

81640761 has 8 divisors, whose sum is 108933504
The reverse of 81640761 is 16704618
Previous prime number is 1487

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6

Name

Name	eighty-one million six hundred forty thousand seven hundred sixty-one

Notation

Scientific notation	8.1640761 × 10^7
Engineering notation	8.1640761 × 10^6

Prime Factorization of 81640761

Prime Factorization 3 × 1487 × 18301

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81640761	Product of the distinct prime numbers

The prime factorization of 81640761 is 3 × 1487 × 18301. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 4, 61, 20, 541, 484, 5511, 5930, 75392, 43312, 339976, 967997, 8247149, 288603, 74652710, 3211237, 237235182, 209639363, 955493385, 8639687997

Basic calculations (n = 81640761)

Multiplication

n×y

n×2	163281522
n×3	244922283
n×4	326563044
n×5	408203805

Division

n÷y

n÷2	40820380.5
n÷3	27213587
n÷3	20410190.25
n÷5	16328152.2

Exponentiation

n^y

n²	6665213856659121
n³	5.441531314854E+23
n⁴	4.4425075755001E+31
n⁵	3.6268969921209E+39

Nth Root

^y√n

²√n	9035.5277101008
³√n	433.8127860234
⁴√n	95.055392851226
⁵√n	38.22798516948

Divisors of 81640761

1, 3, 1487, 4461, 18301, 54903, 27213587, 81640761

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	-81640760	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 81640761 can be divided by 8 positive divisors. The sum of these divisors (counting 81640761) is 1, the average is 0.125.

Base conversion 81640761

Base	System	Value
2	Binary	100110111011011110100111001
3	Ternary	12200121210001220
4	Quaternary	10313123310321
5	Quinary	131400001021
6	Senary	12033502253
8	Octal	467336471
10	Decimal	81640761
12	Duodecimal	23411989
16	Hexadecimal	4ddbd39
20	Vigesimal	15a51i1
36	Base36	1cluex

Cryptographic Hash Functions

md5	296769fbf16d8422a86b11c3f1d88f84
sha1	df56b1d7e7d245fcfd6c6a8a1ec12037268f0ab0
sha256	dad80a3b67d5c7b031df123fbe1da8b0ab652a96821a84b3ec9d674fb3e6e1a6
sha512	1af81f1a78333b2427c134f9b8320234791c9eca3275cb0d6b15d539a1552754b6d0c135160f74f312647d84d503bc5c83c3b812a18968453bf905a802ee7d20
ripemd-160	28ee529a26bc1ae1915b513aee8ff556d317e78e

81640761 as geometric shapes

Circle

Radius = n

Diameter	163281522
Circumference	512964029.98216
Area	2.0939386886685E+16

Sphere

Radius = n

Volume	2.2793433070699E+24
Surface area	8.3757547546741E+16
Circumference	512964029.98216

Square

Length = n

Perimeter	326563044
Area	6665213856659121
Diagonal	115457471.44866

Cube

Length = n

Surface area	39991283139954726
Volume	5.441531314854E+23
Space diagonal	141405946.02059

Equilateral Triangle

Length = n

Perimeter	244922283
Area	2.8861222607614E+15
Altitude	70702973.010294

Triangular Pyramid

Length = n

Surface area	2.8861222607614E+15
Volume	6.4129061546203E+22
Height	38485823.81622