81291252 (number)

81291252 is an even 8-digits composite number following 81291251 and preceding 81291253. In scientific notation, it is written as 8.1291252 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 12 positive divisors. There are 23226048 positive integers (up to 81291252) that are relatively prime to 81291252.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred ninety-one thousand two hundred fifty-two

Notation

Scientific notation 8.1291252 × 10^7
Engineering notation 8.1291252 × 10^6

Prime Factorization of 81291252

Prime Factorization 2 × 2 × 21 × 967753

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40645626
Product of the distinct prime numbers

The prime factorization of 81291252 is 2 × 2 × 21 × 967753. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 9, 88, 63, 652, 609, 9107, 7479, 83881, 28024, 212379, 480137, 4153501, 9347767, 26885244, 89090806, 294035099, 776384920, 3425149372, 969163200

Basic calculations (n = 81291252)

Multiplication

n×y
n×2 162582504
n×3 243873756
n×4 325165008
n×5 406456260

Division

n÷y
n÷2 40645626
n÷3 27097084
n÷3 20322813
n÷5 16258250.4

Exponentiation

ny
n2 6608267651727504
n3 5.3719435096003E+23
n4 4.3669201356868E+31
n5 3.5499240521399E+39

Nth Root

y√n
2√n 9016.1661475374
3√n 433.19284097748
4√n 94.953494656792
5√n 38.195197715294

Divisors of 81291252

1, 2, 4, 21, 42, 84, 967753, 1935506, 3871012, 20322813, 40645626, 81291252

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 -81291251
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 81291252 can be divided by 12 positive divisors. The sum of these divisors (counting 81291252) is 1, the average is 0.083333333333333.

Base conversion 81291252

Base System Value
2 Binary 100110110000110011111110100
3 Ternary 12122222000122010
4 Quaternary 10312012133310
5 Quinary 131302310002
6 Senary 12022204220
8 Octal 466063764
10 Decimal 81291252
12 Duodecimal 23283670
16 Hexadecimal 4d867f4
20 Vigesimal 158182c
36 Base36 1cecqc

Cryptographic Hash Functions

md5 62426da913dd1ff081052de46358a681
sha1 f8b7c0fb79943c09d241ae488862925a9f497488
sha256 db64a9743f1aece7094d7e1e0d799bbde000543d77bc454c007f0fa04e9913af
sha512 113c436ee4cff75fc2ea3b6c2a1b9a4ae8454d28dfe045da52e9923ab1c3e12331d183ffeffa21476a83e2212dc3b8a84910be5a5a436670cbedc39451cee1e2
ripemd-160 f2b21295d0bd32e239ecd9639b30f0f7d6f0935d

81291252 as geometric shapes

Circle

Radius = n
Diameter 162582504
Circumference 510768000.16863
Area 2.0760485107622E+16

Sphere

Radius = n
Volume 2.250194435368E+24
Surface area 8.3041940430489E+16
Circumference 510768000.16863

Square

Length = n
Perimeter 325165008
Area 6608267651727504
Diagonal 114963191.08069

Cube

Length = n
Surface area 39649605910365024
Volume 5.3719435096003E+23
Space diagonal 140800578.67489

Equilateral Triangle

Length = n
Perimeter 243873756
Area 2.8614638307015E+15
Altitude 70400289.337443

Triangular Pyramid

Length = n
Surface area 2.8614638307015E+15
Volume 6.330896139649E+22
Height 38321063.693563