81640268 (number)

81640268 is an even 8-digits composite number following 81640267 and preceding 81640269. In scientific notation, it is written as 8.1640268 × 10^7. The sum of its digits is 35. It has a total of 4 prime factors and 12 positive divisors. There are 40759680 positive integers (up to 81640268) that are relatively prime to 81640268.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred forty thousand two hundred sixty-eight

Notation

Scientific notation 8.1640268 × 10^7
Engineering notation 8.1640268 × 10^6

Prime Factorization of 81640268

Prime Factorization 2 × 2 × 691 × 29537

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40820134
Product of the distinct prime numbers

The prime factorization of 81640268 is 2 × 2 × 691 × 29537. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 10, 7, 34, 332, 672, 9109, 7744, 98076, 97314, 479788, 181657, 6698917, 6891225, 4335282, 11543933, 463363179, 894284941, 2314488699, 5707805608

Basic calculations (n = 81640268)

Multiplication

n×y
n×2 163280536
n×3 244920804
n×4 326561072
n×5 408201340

Division

n÷y
n÷2 40820134
n÷3 27213422.666667
n÷3 20410067
n÷5 16328053.6

Exponentiation

ny
n2 6665133359111824
n3 5.4414327369363E+23
n4 4.4424002694745E+31
n5 3.6267874856317E+39

Nth Root

y√n
2√n 9035.5004288639
3√n 433.81191280708
4√n 95.055249349333
5√n 38.227939000282

Divisors of 81640268

1, 2, 4, 691, 1382, 2764, 29537, 59074, 118148, 20410067, 40820134, 81640268

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81640267
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81640268 can be divided by 12 positive divisors. The sum of these divisors (counting 81640268) is 1, the average is 0.083333333333333.

Base conversion 81640268

Base System Value
2 Binary 100110111011011101101001100
3 Ternary 12200121202101122
4 Quaternary 10313123231030
5 Quinary 131344442033
6 Senary 12033500112
8 Octal 467335514
10 Decimal 81640268
12 Duodecimal 23411638
16 Hexadecimal 4ddbb4c
20 Vigesimal 15a50d8
36 Base36 1clu18

Cryptographic Hash Functions

md5 dd45bd073d1c8ed68970f018d91bb7db
sha1 5948a9e8d8418b52cac12cbabca8855293311198
sha256 43fb68b263ee0a001348cb4d1457936dc361af3f655da278ee2a7fdefc433349
sha512 f09dcb96101775ce49af30b3f455de84f1fd327f324090ac46d10f27395af0b7761699f18c441e3e2f33df17a5650bac1a677291d2b90b21b668f5c3dc04c281
ripemd-160 baaed040083901769d329f0ca78099840dc50c39

81640268 as geometric shapes

Circle

Radius = n
Diameter 163280536
Circumference 512960932.3718
Area 2.0939133996182E+16

Sphere

Radius = n
Volume 2.2793020148483E+24
Surface area 8.3756535984728E+16
Circumference 512960932.3718

Square

Length = n
Perimeter 326561072
Area 6665133359111824
Diagonal 115456774.24137

Cube

Length = n
Surface area 39990800154670944
Volume 5.4414327369363E+23
Space diagonal 141405092.11954

Equilateral Triangle

Length = n
Perimeter 244920804
Area 2.886087404301E+15
Altitude 70702546.05977

Triangular Pyramid

Length = n
Surface area 2.886087404301E+15
Volume 6.4127899794302E+22
Height 38485591.413791