81247072 (number)

81247072 is an even 8-digits composite number following 81247071 and preceding 81247073. In scientific notation, it is written as 8.1247072 × 10^7. The sum of its digits is 31. It has a total of 6 prime factors and 12 positive divisors. There are 40623520 positive integers (up to 81247072) that are relatively prime to 81247072.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred forty-seven thousand seventy-two

Notation

Scientific notation 8.1247072 × 10^7
Engineering notation 8.1247072 × 10^6

Prime Factorization of 81247072

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2538971

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 5077942
Product of the distinct prime numbers

The prime factorization of 81247072 is 2 × 2 × 2 × 2 × 2 × 2538971. Since it has a total of 6 prime factors.

Most popular turbo-numbers

6, 6, 51, 39, 681, 453, 219, 259, 68799, 27019, 891542, 512973, 2702591, 931639, 94402993, 54265600, 629307688, 836836936, 3884163857, 4670529739

Basic calculations (n = 81247072)

Multiplication

n×y
n×2 162494144
n×3 243741216
n×4 324988288
n×5 406235360

Division

n÷y
n÷2 40623536
n÷3 27082357.333333
n÷3 20311768
n÷5 16249414.4

Exponentiation

ny
n2 6601086708573184
n3 5.3631896708969E+23
n4 4.3574345734102E+31
n5 3.5402880052114E+39

Nth Root

y√n
2√n 9013.7157709792
3√n 433.11434984262
4√n 94.94059074484
5√n 38.191045163198

Divisors of 81247072

1, 2, 4, 8, 16, 32, 2538971, 5077942, 10155884, 20311768, 40623536, 81247072

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 -81247071
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 81247072 can be divided by 12 positive divisors. The sum of these divisors (counting 81247072) is 1, the average is 0.083333333333333.

Base conversion 81247072

Base System Value
2 Binary 100110101111011101101100000
3 Ternary 12122212210000211
4 Quaternary 10311323231200
5 Quinary 131244401242
6 Senary 12021223504
8 Octal 465735540
10 Decimal 81247072
12 Duodecimal 23261b94
16 Hexadecimal 4d7bb60
20 Vigesimal 157fhdc
36 Base36 1cden4

Cryptographic Hash Functions

md5 94f0ff8dbf3db8efaf18ff46697bec29
sha1 8ce70a30647a58775394b2ad8af045f64d29ba55
sha256 7123a0d2750ed0a240be58595134bc6768ac7c74265f285317fbec022e023487
sha512 c34883e8af61fcdc6aceee2900a2a10f25c8b5116f197a91c5e16a943c1bcf735fdef6fde5322244ac57285a061c9f0d3bd74e383258f643d01b6ca611d56356
ripemd-160 a1ea24c625f9780f3ba14d7512624d75f897a078

81247072 as geometric shapes

Circle

Radius = n
Diameter 162494144
Circumference 510490409.04176
Area 2.0737925509363E+16

Sphere

Radius = n
Volume 2.2465276359864E+24
Surface area 8.2951702037451E+16
Circumference 510490409.04176

Square

Length = n
Perimeter 324988288
Area 6601086708573184
Diagonal 114900711.1255

Cube

Length = n
Surface area 39606520251439104
Volume 5.3631896708969E+23
Space diagonal 140724056.67021

Equilateral Triangle

Length = n
Perimeter 243741216
Area 2.8583543911041E+15
Altitude 70362028.335103

Triangular Pyramid

Length = n
Surface area 2.8583543911041E+15
Volume 6.3205796418014E+22
Height 38300237.041834