81739968 (number)

81739968 is an even 8-digits composite number following 81739967 and preceding 81739969. In scientific notation, it is written as 8.1739968 × 10^7. The sum of its digits is 51. It has a total of 9 prime factors and 56 positive divisors. There are 27134976 positive integers (up to 81739968) that are relatively prime to 81739968.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred thirty-nine thousand nine hundred sixty-eight

Notation

Scientific notation 8.1739968 × 10^7
Engineering notation 8.1739968 × 10^6

Prime Factorization of 81739968

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 3 × 293 × 1453

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 9
Total number of prime factors
rad Radical 2554374
Product of the distinct prime numbers

The prime factorization of 81739968 is 2 × 2 × 2 × 2 × 2 × 2 × 3 × 293 × 1453. Since it has a total of 9 prime factors.

Most popular turbo-numbers

7, 6, 47, 45, 93, 651, 6134, 2090, 70011, 62306, 605185, 754858, 9690034, 9004381, 47073447, 32809892, 948732015, 413036766, 7624887984, 7471836922

Basic calculations (n = 81739968)

Multiplication

n×y
n×2 163479936
n×3 245219904
n×4 326959872
n×5 408699840

Division

n÷y
n÷2 40869984
n÷3 27246656
n÷3 20434992
n÷5 16347993.6

Exponentiation

ny
n2 6681422368641024
n3 5.461392506072E+23
n4 4.4641404868177E+31
n5 3.6489870053998E+39

Nth Root

y√n
2√n 9041.0158721241
3√n 433.98843294223
4√n 95.084256699646
5√n 38.23727131925

Divisors of 81739968

1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 192, 293, 586, 879, 1172, 1453, 1758, 2344, 2906, 3516, 4359, 4688, 5812, 7032, 8718, 9376, 11624, 14064, 17436, 18752, 23248, 28128, 34872, 46496, 56256, 69744, 92992, 139488, 278976, 425729, 851458, 1277187, 1702916, 2554374, 3405832, 5108748, 6811664, 10217496, 13623328, 20434992, 27246656, 40869984, 81739968

56 divisors

τ Total Divisors 56
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81739967
Sum of the proper positive divisors of n
A Arithmetic Mean 0.017857142857143
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 56
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81739968 can be divided by 56 positive divisors. The sum of these divisors (counting 81739968) is 1, the average is 0.017857142857143.

Base conversion 81739968

Base System Value
2 Binary 100110111110100000011000000
3 Ternary 12200210211011020
4 Quaternary 10313310003000
5 Quinary 131411134333
6 Senary 12035545440
8 Octal 467640300
10 Decimal 81739968
12 Duodecimal 2345b280
16 Hexadecimal 4df40c0
20 Vigesimal 15ah9i8
36 Base36 1cnyyo

Cryptographic Hash Functions

md5 169800865ed300c1908e1b7ca4ca1781
sha1 d5545df0e92165784eca267449e55f0349168db8
sha256 f8434d7923b9c7e0214c9d8b89b74545931322f9d631184986a45b325ef22dfb
sha512 1f4643766e0fdad9c17a829b910752fee2568682333e9baf9a0027decedb8a00da2f271b497350a7eadc95e7bf1ab9b8b3643cfefffb1a00406f1101c7dba7c5
ripemd-160 83a18f44b8e5449f8b0b8bf696b91253a77700e3

81739968 as geometric shapes

Circle

Radius = n
Diameter 163479936
Circumference 513587365.94693
Area 2.0990307428853E+16

Sphere

Radius = n
Volume 2.2876627433928E+24
Surface area 8.3961229715413E+16
Circumference 513587365.94693

Square

Length = n
Perimeter 326959872
Area 6681422368641024
Diagonal 115597771.33354

Cube

Length = n
Surface area 40088534211846144
Volume 5.461392506072E+23
Space diagonal 141577777.58505

Equilateral Triangle

Length = n
Perimeter 245219904
Area 2.8931407523284E+15
Altitude 70788888.792527

Triangular Pyramid

Length = n
Surface area 2.8931407523284E+15
Volume 6.4363127929415E+22
Height 38532590.444514