81121490 (number)

81121490 is an even 8-digits composite number following 81121489 and preceding 81121491. In scientific notation, it is written as 8.1121490 × 10^7. The sum of its digits is 26. It has a total of 4 prime factors and 16 positive divisors. There are 32413056 positive integers (up to 81121490) that are relatively prime to 81121490.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-one thousand four hundred ninety

Notation

Scientific notation 8.1121490 × 10^7
Engineering notation 8.1121490 × 10^6

Prime Factorization of 81121490

Prime Factorization 2 × 5 × 1033 × 7853

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81121490
Product of the distinct prime numbers

The prime factorization of 81121490 is 2 × 5 × 1033 × 7853. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 3, 22, 96, 688, 813, 2427, 5244, 96626, 99952, 625516, 824528, 3072236, 1092721, 99542835, 97355501, 692326090, 834088725, 9645703387, 7361737315

Basic calculations (n = 81121490)

Multiplication

n×y
n×2 162242980
n×3 243364470
n×4 324485960
n×5 405607450

Division

n÷y
n÷2 40560745
n÷3 27040496.666667
n÷3 20280372.5
n÷5 16224298

Exponentiation

ny
n2 6580696139820100
n3 5.3383587609945E+23
n4 4.3305561684643E+31
n5 3.5130116891452E+39

Nth Root

y√n
2√n 9006.7469155073
3√n 432.89108266133
4√n 94.903882510187
5√n 38.1792316276

Divisors of 81121490

1, 2, 5, 10, 1033, 2066, 5165, 7853, 10330, 15706, 39265, 78530, 8112149, 16224298, 40560745, 81121490

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81121489
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81121490 can be divided by 16 positive divisors. The sum of these divisors (counting 81121490) is 1, the average is 0.0625.

Base conversion 81121490

Base System Value
2 Binary 100110101011101000011010010
3 Ternary 12122122101202122
4 Quaternary 10311131003102
5 Quinary 131231341430
6 Senary 12014414242
8 Octal 465350322
10 Decimal 81121490
12 Duodecimal 23201382
16 Hexadecimal 4d5d0d2
20 Vigesimal 15703ea
36 Base36 1capqq

Cryptographic Hash Functions

md5 5d8458dd6d7bf17dc1f23a20b4ad035e
sha1 38a1cb1fd89322e8ecabb3335b7b0684fbda5276
sha256 53f3ef545d8e5d2f1d68d575012edd3b51078141ce90d4c3b9a8aafadc4730a6
sha512 5f9b384e75dd623b0cf9501ba8f71c9d6c44d0665597e1525a4e079e25067ca678756ca618869f9370fb962a517cda95533402f22b27841c05f578b26be89296
ripemd-160 45ed02deec960225612c10cf73d883d55dd2da7a

81121490 as geometric shapes

Circle

Radius = n
Diameter 162242980
Circumference 509701354.06452
Area 2.0673866648366E+16

Sphere

Radius = n
Volume 2.236126488769E+24
Surface area 8.2695466593462E+16
Circumference 509701354.06452

Square

Length = n
Perimeter 324485960
Area 6580696139820100
Diagonal 114723111.35791

Cube

Length = n
Surface area 39484176838920600
Volume 5.3383587609945E+23
Space diagonal 140506542.26569

Equilateral Triangle

Length = n
Perimeter 243364470
Area 2.8495250158352E+15
Altitude 70253271.132845

Triangular Pyramid

Length = n
Surface area 2.8495250158352E+15
Volume 6.2913161338431E+22
Height 38241037.119304