81793988 (number)

81793988 is an even 8-digits composite number following 81793987 and preceding 81793989. In scientific notation, it is written as 8.1793988 × 10^7. The sum of its digits is 53. It has a total of 4 prime factors and 12 positive divisors. There are 40320840 positive integers (up to 81793988) that are relatively prime to 81793988.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred ninety-three thousand nine hundred eighty-eight

Notation

Scientific notation 8.1793988 × 10^7
Engineering notation 8.1793988 × 10^6

Prime Factorization of 81793988

Prime Factorization 2 × 2 × 71 × 288007

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40896994
Product of the distinct prime numbers

The prime factorization of 81793988 is 2 × 2 × 71 × 288007. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 1, 56, 54, 312, 583, 4663, 3914, 99167, 27735, 155438, 302681, 1309220, 1787140, 76454765, 87312828, 768067868, 562199301, 2719426988, 8304759324

Basic calculations (n = 81793988)

Multiplication

n×y
n×2 163587976
n×3 245381964
n×4 327175952
n×5 408969940

Division

n÷y
n÷2 40896994
n÷3 27264662.666667
n÷3 20448497
n÷5 16358797.6

Exponentiation

ny
n2 6690256472944144
n3 5.4722275766492E+23
n4 4.4759531673771E+31
n5 3.66106059661E+39

Nth Root

y√n
2√n 9044.0028748337
3√n 434.0840160989
4√n 95.09996253855
5√n 38.242324004313

Divisors of 81793988

1, 2, 4, 71, 142, 284, 288007, 576014, 1152028, 20448497, 40896994, 81793988

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 -81793987
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 81793988 can be divided by 12 positive divisors. The sum of these divisors (counting 81793988) is 1, the average is 0.083333333333333.

Base conversion 81793988

Base System Value
2 Binary 100111000000001001111000100
3 Ternary 12200220120020222
4 Quaternary 10320001033010
5 Quinary 131414401423
6 Senary 12041043512
8 Octal 470011704
10 Decimal 81793988
12 Duodecimal 23486598
16 Hexadecimal 4e013c4
20 Vigesimal 15b44j8
36 Base36 1cp4n8

Cryptographic Hash Functions

md5 edeff08c4495dcc20987c9a30b5d63cd
sha1 cf3e45ca29bf932c37500c196bd316a05642d7dc
sha256 591bcbb23ca94476f83667746de056ca3abbeade32dd60a25c46a03608f8e0cf
sha512 320640156371433ccb4532084a4a05c76316e64bcd41730b49264458ee403a3e356fd2ccf1f8d37897124613de237c1ab1e3b0de9c0951db34111c039ffa1416
ripemd-160 82e4343903e42d9b41182ec5cc84fe82af8c530e

81793988 as geometric shapes

Circle

Radius = n
Diameter 163587976
Circumference 513926783.61722
Area 2.1018060586033E+16

Sphere

Radius = n
Volume 2.292201327143E+24
Surface area 8.4072242344132E+16
Circumference 513926783.61722

Square

Length = n
Perimeter 327175952
Area 6690256472944144
Diagonal 115674167.15018

Cube

Length = n
Surface area 40141538837664864
Volume 5.4722275766492E+23
Space diagonal 141671342.96968

Equilateral Triangle

Length = n
Perimeter 245381964
Area 2.8969660317015E+15
Altitude 70835671.48484

Triangular Pyramid

Length = n
Surface area 2.8969660317015E+15
Volume 6.4490820460744E+22
Height 38558055.716727