81244981 (number)

81244981 is an odd 8-digits prime number following 81244980 and preceding 81244982. In scientific notation, it is written as 8.1244981 × 10^7. The sum of its digits is 37. It has a total of 1 prime factors and 2 positive divisors. There are 81244980 positive integers (up to 81244981) that are relatively prime to 81244981.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred forty-four thousand nine hundred eighty-one

Notation

Scientific notation 8.1244981 × 10^7
Engineering notation 8.1244981 × 10^6

Prime Factorization of 81244981

Prime Factorization 81244981

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 81244981
Product of the distinct prime numbers

The prime factorization of 81244981 is 81244981. Since it has a total of 1 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81244981)

Multiplication

n×y
n×2 162489962
n×3 243734943
n×4 324979924
n×5 406224905

Division

n÷y
n÷2 40622490.5
n÷3 27081660.333333
n÷3 20311245.25
n÷5 16248996.2

Exponentiation

ny
n2 6600746937690361
n3 5.3627755953846E+23
n4 4.3569860135429E+31
n5 3.5398324588756E+39

Nth Root

y√n
2√n 9013.5997803319
3√n 433.11063422205
4√n 94.939979883777
5√n 38.190848581843

Divisors of 81244981

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 81244982
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 40622491
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 9013.5998358037
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999999753831
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81244981 can be divided by 2 positive divisors. The sum of these divisors (counting 81244981) is 81244982, the average is 40622491.

Base conversion 81244981

Base System Value
2 Binary 100110101111011001100110101
3 Ternary 12122212200011101
4 Quaternary 10311323030311
5 Quinary 131244314411
6 Senary 12021210101
8 Octal 465731465
10 Decimal 81244981
12 Duodecimal 23260931
16 Hexadecimal 4d7b335
20 Vigesimal 157fc91
36 Base36 1cdd11

Cryptographic Hash Functions

md5 4d9693c2c6f35c7ddb1f5299831b1db9
sha1 8f453d915506851546b87685c1c30f3ebc77bf05
sha256 1324398c80360995ee4bfb9c2f908c125acf5e6972989f32177fc77ec4c29d1f
sha512 e2fba2c44e13494478f5040db77b4b4bb8ab60755ecdd519c0847ad44778b8cb5d11437d5c17c28e5243eea133036e327f1272023bdd153d8f3ddfbd4666a6ea
ripemd-160 df988e9c3d52b54417b67b9f033d13cfc17a9dcb

81244981 as geometric shapes

Circle

Radius = n
Diameter 162489962
Circumference 510477270.90128
Area 2.0736858087653E+16

Sphere

Radius = n
Volume 2.2463541884415E+24
Surface area 8.2947432350613E+16
Circumference 510477270.90128

Square

Length = n
Perimeter 324979924
Area 6600746937690361
Diagonal 114897754.00494

Cube

Length = n
Surface area 39604481626142166
Volume 5.3627755953846E+23
Space diagonal 140720434.95197

Equilateral Triangle

Length = n
Perimeter 243734943
Area 2.8582072659961E+15
Altitude 70360217.475984

Triangular Pyramid

Length = n
Surface area 2.8582072659961E+15
Volume 6.3200916491303E+22
Height 38299251.334981